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The Good Sister

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Jennifer and Catherine-sisters who have inherited equal shares of power in Pegasus Satellite Services, one of the biggest communications empires in the world-could not be more different. While Catherine is an extraordinary beauty whose looks attract the most handsome and powerful men, her sister is a plain-Jane, no-nonsense gal who prefers running the company to walking the red carpet.

But Jennifer's aversion to the spotlight becomes secondary after the successful launch of the Pegasus III satellite, her newest technological masterpiece. The company needs someone to explain the revolutionary communications tool to potential clients and Jennifer is forced to make the awkward transition from playing scientist in the laboratory to playing hostess at the most lavish party in Cannes.

That's where she meets Padraig, a major film star with enough Irish charm and celebrity cache to make the move to power producer. But when he marries Jennifer, Catherine's protective instincts are is the playboy actor only after Jennifer's money and connections? When Jennifer is almost killed in a car accident on her honeymoon, Catherine feels she must intervene in her sister's relationship. But Jennifer begins to suspect that Catherine is jealous of the wallflower sister's new romance, and possibly of her power within the company. Was the accident Catherine's murderous attempt to win complete control of Pegasus? Suddenly, neither sister can trust the other in a game that has their love, fortune, and even their lives hanging in the balance.

What begins as a rivalry between sisters becomes a chilling novel of psychological suspense in which one sister find herself alone on a yacht at sea, forced to defend herself from a terrifying killer in league with her sister. But which sister?

296 pages, Hardcover

First published January 1, 2002

12 people are currently reading
333 people want to read

About the author

Diana Diamond

11 books29 followers

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5 stars
72 (10%)
4 stars
183 (27%)
3 stars
271 (41%)
2 stars
98 (14%)
1 star
34 (5%)
Displaying 1 - 30 of 90 reviews
Profile Image for Diane Wallace.
1,448 reviews169 followers
October 21, 2017
**! it was not bad or good ..the storyline was more focus on these neurotic siblings (paperback!)
Profile Image for Kate.
69 reviews6 followers
October 13, 2010
I am on a quest to read or give away all the books on my shelves, so I am reading anything and everything we've got so I can add it to the stack of giveaways. This is one that my Aunt Babs gave me years ago and I never read. It's full of back-stabbing, murder-attempts, lies, and manipulation pretty much on the level of a Lifetime channel movie that, when you're in the right mood, can be horribly entertaining. I wanted this to be one of the Baxter-Bernie or Blythe Danner-level Lifetime movies, though, but it was more of a Tori Spelling caliber.
Profile Image for Georgiann Hennelly.
1,960 reviews25 followers
July 14, 2010
The Good Sister is a very good psychological suspense.Two sisters become extremely wealthy when their father passes away and they inherit his multi million dollar company.Old rivalries begin to resurface and one sister wants the other sister dead. Very intense reading hard to tell which one is good which is the bad sister. This is a page turning all night read.. kept me in suspense.
Profile Image for Nancy.
912 reviews4 followers
May 21, 2017
I had the "who" of "who done it" figured out early on, then changed my mind, then changed it again and back and forth until it was finally revealed about 20 pages from the end. Not classic fiction but good enough that you can escape reality for awhile.
Profile Image for Lisa James.
941 reviews81 followers
January 2, 2014
OUTSTANDING! This suspense/drama, sister against sister who done what to who & how do you know who's good & who's bad book is a nail biter & a page turner that's next to impossible to put down....It takes you back & forth wondering which sister is the evil one, or wait, is it the one's husband? Or is it the long term mentor? There are arguments & theories for & against EACH character that will keep you guessing till the final chapter!
Profile Image for JaneEire.
23 reviews
September 22, 2014
Try to avoid reading the jacket - gives away too much of the plot.
200 reviews1 follower
December 31, 2024
By page 3, I knew that one of the sisters was a psychopath. I just didn't know which one.

Two sisters inherit their father's satellite company and become instant billionaires. One loves the limelight and excels at marketing. The other is more introverted and handles the technical aspects. Still, even though they have everything, there is still an intense rivalry, which is pushed into overdrive when a movie star sweeps one of the them off her feet into a whirlwind marriage without a prenup.

Soon after, the sister miraculously survives a car wreck that was not an accident. Who set her up . . . her gold digger husband or her jealous sister? Then the other sister is attacked in her apartment: is it revenge or is someone out to get them both?

I enjoyed trying to figure out the answers to these and other questions. I did not, however, like any of the main characters. They were all self-centered and made some really stupid decisions. It was a nice little "escape" read but I wouldn't recommend this book to a friend.
14 reviews1 follower
August 8, 2017
This was a decent, quick read. That said, I didn't think the characters were that well fleshed out, so I didn't find myself especially caring about any of them. And one of the major relationships that starts in the book was so undefined -- most of it happened "behind the scenes" -- that I couldn't comprehend why they ever got together. It didn't make sense. I think it's because you aren't supposed to know who the bad guy is, you aren't allowed to truly get into the mindset of any of the characters, so you don't really get to know any of them or to understand their true feelings.

But, as I mentioned before, it's still a decent, escapist read. I got through it really quickly and did find moments where the book was hard to put down. I wouldn't call it "great" but I definitely wouldn't call it "bad" either. I'd read this author again.
Profile Image for Angela Eggleston.
40 reviews
December 2, 2019
I liked how the author set up the narrative chapters to fill in background about the sisters without giving away which sister was the evil one. I was a little bored with the back-and-forth dialogue about who had it in for who. The constant rehashing didn’t forward the plot. In my opinion the events all happened a little too quickly and conveniently. I also feel that one sister acted completely out of character and I don’t believe that anyone in her position would make the decisions she made.
623 reviews2 followers
October 13, 2021
While the suspense element of this book is well-done, it is hard to care about the characters because they are both generally unlikable. The rivalry between the two sisters is pronounced and leads to all of the conflict as it is never clear who is trying to harm the others among the four main characters. Overall, for mystery and suspense it is a good read, but not necessarily for character development.
419 reviews1 follower
July 28, 2025
This book takes sibling rivalry to the next level. The book is broken up into four parts and at the start of each part one of the sisters is describing their relationship at various points of their lives. However, you do not know which sister is the narrator. I don't want to give too much away but this book definitely keeps you guessing as to which sister is the narrator and which sister is trying to kill the other one.
Profile Image for Edna Foster.
556 reviews3 followers
December 20, 2018
This is a generous three star rating. the author, actually an elderly gentleman, used to live in my Florida neighborhood. We read one of his other books for book club and invited him to speak. He said this was his better Disna Diamond novel, so when I saw it at Goodwill, I picked it up. Clever back and forth as to who the guilty party is, better editing that the other one I read.
Profile Image for Jo.
87 reviews
May 7, 2019
I picked up this book on the way to the airport from a "used and weeded" box of books the local library was selling for a $1. It was definitely well worth that dollar! I tried and tried to discover "who was the good sister." Right towards the end, I figured it out.....about the same time the hero rushed in to save her!
197 reviews
March 26, 2024
This was one of those books that went back and forth on who was the suspect for attempted murder. It could have been any of the characters in this story. Greed, jealousy, needing what the other person has so bad that you find whatever you can do to be rid of them. Opens the readers' eyes to be aware of what drives you forward.
1,817 reviews
February 8, 2021
a psychological thriller that is missing the thriller component. two poor little rich girls are at the center of this novel, each convinced that she has been wronged by the other. the ending is predictable quite early in the story, so the thriller part is nonexistent.
Profile Image for Noni.
125 reviews2 followers
October 9, 2021
The beginning started off slow...took me a while to get into it, but then it got me and kept me for the rest of the book. The ending, however, was disappointing for sure. I was hoping for a more sinister twist at the end. 🤷🏽‍♀️
Profile Image for Valerie Vera.
261 reviews
August 9, 2019
Very slow in the beginning but picks up in the middle. It could be condensed from the much unnecessary plot. This would make it more of an enjoyable read.
Profile Image for Sapphire9289.
1 review5 followers
August 19, 2019
Such a great book, keeps you guessing and wondering. Very suspenseful and thrilling, I absolutely LOVED it!
Profile Image for Leigh Adams.
66 reviews1 follower
January 24, 2021
This was about a 3.5. Beginning a little on the slow side but I was pretty engaged for the rest of it!
Profile Image for Tracy Bradshaw.
Author 2 books1 follower
April 25, 2021
A quick mystery read, highlighting the competition and jealousy in a relationship between two sisters. It wasn’t exceptional, it wasn’t bad- it was okay.
Profile Image for Michelle Tejada.
169 reviews1 follower
August 11, 2021
This is the story of sibling rivalry that continues into adulthood. I enjoyed it. You know what will happen from the beginning but the who is the big mystery.
Profile Image for Laura.
276 reviews
December 9, 2021
A must read. Truly was not sure who did it till the end of the book. They author does a great job of keeping the reader guessing.
Profile Image for BlanchRanch.
241 reviews1 follower
Read
January 4, 2024
Longer than it needed to be, but good. Keeps you guessing which sister sucks. Never know who to believe. Glad Peter was legit. Suspenseful ending. Paidragig= sass.
This entire review has been hidden because of spoilers.
Profile Image for Robin.
25 reviews1 follower
June 20, 2024
It started as an intriguing mystery but ended up dragging on into a predictable ending.
Displaying 1 - 30 of 90 reviews

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