Goodreads helps you keep track of books you want to read.
Start by marking “Alien Proliferation (Katherine "Kitty" Katt, #4)” as Want to Read:
Alien Proliferation (Katherine "Kitty" Katt, #4)
Enlarge cover
Rate this book
Clear rating
Open Preview

Alien Proliferation (Katherine "Kitty" Katt #4)

4.17  ·  Rating Details ·  1,593 Ratings  ·  162 Reviews
Alien Super-Being Exterminator Kitty Katt is expecting her first baby. But the alien attacks are getting more dangerous, and now Kitty and her Alpha Centaurion husband, Jeff, have to find out who's behind the conspiracy to kill Kitty's secret agent mom and what caused Kitty's transformation into a superhuman-and they've got to do it all before the baby shower...
Paperback, 458 pages
Published December 6th 2011 by DAW
More Details... edit details

Friend Reviews

To see what your friends thought of this book, please sign up.

Reader Q&A

To ask other readers questions about Alien Proliferation, please sign up.

Be the first to ask a question about Alien Proliferation

Community Reviews

(showing 1-30)
filter  |  sort: default (?)  |  Rating Details
Shannon (Giraffe Days)
Feb 29, 2012 Shannon (Giraffe Days) rated it liked it
Shelves: sci-fi, 2012
This fourth instalment in the Kitty Katt series delivers just as much action as the previous books, proving that a newborn can't slow Kitty down. Fighting another grand mastermind design full of red herrings and unknown enemies, Kitty and her alien husband Jeff Martini are on hand to save the day.

To recap for those who aren't familiar with the series, Kitty inadvertently discovered that there are aliens on Earth - very sexy, drop-dead gorgeous aliens who came here from their own planet in the Al
Dec 17, 2011 Shortlatte rated it really liked it
The Kitty Katt series has reluctantly become one of my favorites. Though written in the style of a humorous urban fantasy, this series is sci-fi all the way (though thankfully, it's dispensed with most of the incomprehensible technical jargon after the first book). While I'm not really a sci-fi girl, it was actually the humor that turned me off initially. Kitty was too sarcastic, the A-C's were too unbelievable, and the plot elements were insanely over-the-top. Kitty and Martini were too instant ...more
Nov 16, 2011 Katie(babs) rated it really liked it
Such much ridiculousness going on here, but I can't get enough of it.

Kitty is now known as Wolverine with Boobs and still lusts for Martini like a sailor on leave.

Total wackiness ensues.
Oct 15, 2011 ALPHAreader rated it it was amazing
Following the events of ‘Alien in the Family’, Katherine “Kitty” Katt is now officially Mrs Jeff Katt-Martini, and enjoying wedded bliss to her Alpha alien honey. But hot on the heels of Jeff and Kitty’s nuptials was more joyful news of a baby on the way.

With baby and baby shower looming, Kitty is holed up on bed rest and hating every minute of it. Carrying an alien baby means Kitty’s breasts are turning to torpedoes and baby’s kicks are rocket-powered.

Kitty also hates having to take to bed wh
Gecky Boz
Nov 19, 2011 Gecky Boz rated it it was amazing
Powerful Permutation

* Won this ARC from a contest that the author had

5 out of 5 gnomes

Loved this book so much. There was so much happening this time around and a lot at stake.

It's great to feel so many emotions about every single character, it's intriguing how every little character can be important in some way and really make you care about them.

I don't think I've ever read a series that makes me actually laugh out loud so much while reading, this can be embarrassing if it happens at work but
Colliding Worlds
Oct 20, 2015 Colliding Worlds rated it really liked it
Dieses Buch beginnt für Kitty nicht ganz so rasant, wie der Leser es gewohnt ist. Das ist natürlich auch besser so, denn schließlich ist sie schwanger. Trotzdem fand ich es etwas schade, dass sie sich auf Grund des Kindes zurückhalten musste. Es war natürlich eine logische Sache, aber ich war zu dem Zeitpunkt ein wenig pessimistisch, ob es eine gute Idee war, so früh in der Reihe bereits ein Kind für Jeff und Kitty in die Handlung hineinzubringen.
Es dauerte aber gar nicht allzu lange und Koch ha
Nov 13, 2011 Larissa rated it it was amazing
Previously Published on my blog: Welcome to Larissa's Bookish Life

*Contains MINOR SPOILERS for the previous books in the series.

There is doubting it, Gini Koch can write the heck out of a book. Funny one-liners, incredible action and let’s not forget the amazingly compeling and lovable characters. The Katherine “Kitty” Katt series is right up there amongst my favorite series ever, if not at the top and am not surprised at all that Gini has done it again with Alien Proliferation.

Alien Proliferati
Blodeuedd Finland
May 08, 2015 Blodeuedd Finland rated it really liked it
Shelves: scifiromance
These books are insane. I think Gini took everything she liked, mixed it together, went a bit crazy, wrote it down and made a freaking marvelous books. I think all authors should just run with it like she does. But then I am sure if someone else did it, I would think "come one, please", but here, here it works.

What to say then, I am a bit lost for words. Ok, I will try to put my mind back together. Kitty is awesome as always, I really need her as my bff. She kicks ass and saves the day. Martini,
Patti TheLoveJunkee
Nov 29, 2011 Patti TheLoveJunkee rated it really liked it
Shelves: sci-fi
*SPOILERS for books 1-3*

As Alien Proliferation opens, Katherine "Kitty" Katt (now Martini) is nearing the end of her pregnancy, and she's miserable: bed rest, inability to decide on even the smallest baby supplies, and discomfort all combine to make Kitty one cranky agent.

Then, a phone call comes in - Kitty's best friend from college is in trouble. Jeff and Christopher rush out to save the day, but of course it's not that easy: more problems are uncovered than are solved, and then suddenly - the
Alien Proliferation picks up the story several months after the ending of Alien in the Family with Kitty heavily pregnant and about to give birth to her first child. Being pregnant with an alien / human hybrid has really taken it out of our heroine though so she is stuck on bed rest and feeling rather cranky, luckily she has superdad-to-be and empath Jeff on hand to anticipate her every need. The bad guys aren't going to wait until after the happy event to start causing trouble though and things ...more
Feb 04, 2012 Kristen rated it really liked it
GENRE: Science Fiction Fantasy/Romance
THEME: Alien, Action/Suspense

Gini Koch does it again; her Katherine “Kitty” Katt series is filled with so much action, unbelievably fantastic characters, action that will keep you on your toes and romance that always makes a girl need to fan herself. This is my favorite science fiction book and boy was I excited that this was a long book, so get ready for Kitty kicking some major butt and making
Nov 09, 2011 Ratkin rated it it was amazing
Shelves: won
Any of you who have read reviews of mine previously know two things: I hate trying to write a plot synopsis, and I despise spoilers and the people who disseminate them. If you're reading this review to get either of those things, all I can tell you is that you need to buy this book, read it, enjoy it, and recommend it to all of your friends. OK, you can go now. There's nothing more here for you.

As for the rest of need to buy this book, read it, enjoy it, and recommend it to all
Dec 26, 2011 Sofija rated it it was amazing
I have to admit that I didn’t like "Alien proliferation" as much as the other three books. Don’t get me wrong, it is still an excellent read, but while I thought that first three books in the series were flawless, I could pinpoint some minor minuses in this one.
The first quarter of the book was kind of slow because of Kitty’s pregnancy. But what upseted me the most was that Kitty wasn’t her sharp self. I love this heroine because of her brain, because she gets everything better and faster than a
Nov 03, 2011 Carien rated it it was amazing
Shelves: favorites, scifi
Four books into the Katherine "Kitty" Katt series and Koch is still going strong.

Once more Koch delivers a wacky, action packed, delightfully fun adventure that keeps you guessing and laughing from the start.

There's quite some emotional moments in this book as well with at least two moments that had us sniffling.

Kitty's adventures have always been a bit over the top (which to me is one of the charms of this series), but in this book certain events sky-rocket totally out of there, to soar back in
Apr 04, 2012 Holly rated it it was amazing
Kitty is ready to have her baby, not without complications of course. (I wish she remembered all that stuff but neither did Reader). Jamie is quite special and shows it from the start. While still in recovery Kitty uncovers some serious issues with Christopher that lead them into yet another conspiracy within a conspiracy which also happens to include one of her childhood friends, Amy. All the women seem to be pregnant and therefore out of commission for field work and Kitty is chomping at the b ...more
Dec 19, 2011 Stephaney rated it liked it
I was pretty disappointed with this installment 2.5 stars. I think there are too many characters now, which when added to the too many crazy plots, is just too much all around. It starts to read like a first grader is telling you about something that happened to them.
We did this. He did this. Then we all went here. Then person x opened the door. Then persons y and z walked through it. He tripped and fell. Then we all laughed. Then person x.... Anyway you get my point. It was a like a play by p
Kitty's getting to be too much for me. She has a baby, nearly dies, (not a spoiler, it's in the blurb) and when everyone is showing concern she just blows them off. She hasn't really matured at all over the series, she's still like a squirrel on crack. It was amusing at first, but it's getting old, especially since she's a mother now. But what has really killed it for me is the fact that she claims to have not one, but two soulmates, neither of which are her husband. I get it, different world, a ...more
Natalie Ram
May 17, 2013 Natalie Ram rated it liked it
This series is a lot of fun to read. Quick in pacing, exciting and non-stop from start to finish. This book was no exception. It was some of the content that just really drove me insane this time. Like Kitty, I'm a new mother and I guess some of the preposterous insanity (which is always there) just bugged me. The ease in which she goes from giving birth to pumping gallons of breast milk to galavanting around Paris sans recently born child. Also the constant constant constant reference to the "t ...more
Carolyn F.
Feb 23, 2016 Carolyn F. marked it as could-not-finish
Shelves: sci-fi
I could not finish this book. I got to page 86 and I was so not into this book at all. There are all these aside jokes, and "girlfriend" from any gay that happens to be nearby, and after dying twice during childbirth, she'd rather talk about music she likes than push. Finally everyone around yells, "Push!". Okay, what in the hell. This is like slapdash comedy, not the new version the 100 years ago version.

I thought maybe it got better at the end but no, it's Kitty standing in front of everyone
Sep 27, 2014 HJ rated it really liked it
Shelves: sci-fi
For some reason, I just love this series. Slightly corny, action packed, Men-in-Black meets Lara Croft (character, not profession).

Kitty and Jeff (alien hottie) are now married and here comes the baby. As usual, there's no time for laying back and enjoying the new family as bad guys are out to get all of the Alphas and take over (of course).

Armed with her handy dandy iPod and newly formed powers, Kitty's not going to sit back on maternity leave. Oh, no. She ends up in the middle of it all, and
Aug 24, 2014 Brianna rated it liked it
3.5 stars.

Some parts really dragged on, and I definitely took notice of Kitty's ego this time around. It got a bit annoying. There were also a few parts in the book that were really slow, when everyone was talking and Kitty basically had to explain everything to all these really smart guys. So it was slow and a bit unbelievable.
Still, though, I found myself liking the action, and Jamie is one interesting baby!
And once again Gini Koch did not disappoint: the breaak-neck action and witty banter are all back just like the yummy A-Cs and cutie Poofs. As usual so many things happened in a whirlwind you have to hang on not to get lost as not just the A-Cs but Kitty, the mysteries and everything happens like at hurricane-speed. Fantastic new addition to the series, loved it and as always: can't wait for more! :-D
May 16, 2016 June rated it liked it
Recommends it for: Kitty Katt fans
Getting a little tired of some of the themes-jokes so not a 4, but maybe a 3.5. Can't remember if it was this one or the last one - wish I could have slowed down and marked or written down the quote on evil.
Kathy Davie
Mar 29, 2013 Kathy Davie rated it really liked it
Shelves: romance, sci-fi
Fourth in the Katherine "Kitty" Katt science fiction-romance series revolving around a former advertising manager and her alien husband.

My Take
It's like reading the comics in text form without the graphics! I have to confess, as much as I loved my comics as a kid, I do prefer this format.

Whoa, lots of changes in this one with an emphasis on Chuck's strengths---detecting conspiracies. And reading this story just makes me so confused…! It's a Keystone Kops of round and round about. It's also an ad
Dark Faerie Tales
Review courtesy of Dark Faerie Tales

Quick & Dirty: Super-duper alien fantasy novel with an over-sexed heroine with a crazy sense of humor but the over-abundance of dialogue sometimes kills the pacing.

Opening Sentence: You’d think after fighting parasitic jellyfish things from space that turn humans into fugly monsters, fending off some killer alligators while dodging mystery explosives, and warding off an alien invasion, I’d be able to handle anything, right?

The Review:

The fourth novel in th
Dec 15, 2011 Nicole rated it really liked it
Joint review with Has originally posted here:

Publisher: DAW
Publish Date: Out Now!
How we got this book: ARCs from the author/publisher

Has: Alien Proliferation is the fourth book in Gini Koch’s high octane scifi romantic series and this installment follows up from the last two books with major life changes that Kitty and Jeff have to face, emotionally and physically. I always look forward to a new book in this series because I know it will have humour, outl
*Rating* 3.0
*Genre* Science Fiction/Romance


*Rating* 3.5
*Genre* Science Fiction/Romance

Alien Proliferation is the fourth novel in the Katherine “Kitty” Katt-Martini series by Gini Koch. I added the Martini to the end of Kitty’s name since she is now happily married to Alpha Centaurion Commander Jeffrey Martini and expecting their first child as the story unfolds.

Kitty goes by several other names as well like Kitty Katt-Martini, Commander Martini of the Airborne Division, as well as Missus
Jan 23, 2017 Josephine rated it it was amazing
You laugh, you feel the fast paced action and you want more. I can't wait to read the next book
Nikki Brandyberry
Dec 05, 2011 Nikki Brandyberry rated it really liked it
Kitty and Martini thought saving the world was hard? They have a revelation coming now that they are becoming parents to a extremely powerful superbeing. A child that those who want to take over the world will want. Something Kitty and Martini will have to be vigilant in stopping.

Being thrust into the spotlight once again Kitty will have to unravel a conspiracy to kill the leaders of both worlds all while learning how to be a mom to an infant. Nothing is as it seems and those who should be trust
Joshua Palmatier
Oct 26, 2012 Joshua Palmatier rated it really liked it
This is the fourth book in Gini Koch's Alien series. I've enjoyed all of them, mostly because they are so action-packed and because the characters are fun to follow. The plots are convoluted and over-the-edge in the believability factor, but the whole point is just to have fun. The books aren't intended to be taken too seriously.

The premise of this book is to introduce everyone to Kitty Katt and Martini's child. The birth pretty much happens right off the bat in the book, although the plot start
« previous 1 3 4 5 6 7 8 9 next »
There are no discussion topics on this book yet. Be the first to start one »
  • Endgame (Sirantha Jax, #6)
  • Shades of Dark (Dock Five Universe, #2)
  • Enemy Games (Enemy, #2)
  • Close Encounters (Alien Affairs, #1)
  • Children of Scarabaeus (Scarabaeus, #2)
  • Alexander Outland: Space Pirate
  • The Star Prince (Star, #2)
  • An Officer's Duty (Theirs Not to Reason Why, #2)
  • An Accidental Goddess
Gini Koch lives in Phoenix, Arizona and writes the bestselling fast, fresh and funny Alien/Katherine “Kitty” Katt series for DAW Books, the Necropolis Enforcement Files series, and the Martian Alliance Chronicles series. Alien in the House, Book 7 in her long-running Alien series, won the RT Book Reviews Reviewer’s Choice Award as the Best Futuristic Romance of 2013. Book 14, Alien Nation, release ...more
More about Gini Koch...

Other Books in the Series

Katherine "Kitty" Katt (1 - 10 of 18 books)
  • Touched by an Alien (Katherine "Kitty" Katt, #1)
  • Alien Tango (Katherine "Kitty" Katt, #2)
  • Alien in the Family (Katherine "Kitty" Katt, #3)
  • Alien Diplomacy (Katherine "Kitty" Katt, #5)
  • Alien vs. Alien (Katherine "Kitty" Katt, #6)
  • Alien in the House (Katherine "Kitty" Katt, #7)
  • Alien Research (Katherine "Kitty" Katt, #8)
  • Alien Collective (Katherine "Kitty" Katt, #9)
  • Clockwork Universe: Steampunk vs. Aliens
  • Universal Alien (Katherine "Kitty" Katt, #10)

Share This Book

“My superhero name should be Density Girl.” 0 likes
More quotes…