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One Thing I Know

3.97  ·  Rating details ·  406 ratings  ·  146 reviews
A fresh, heartfelt romance involving a case of mistaken identity when a ghostwriter masquerades as a relationship expert and the man who is determined to expose her holds not only the key to her success, but also her heart…

Rachel Somers is America’s #1 relationship coach—America just doesn’t know it. Rachel writes the books, but her Aunt Donna plays the face of the operati
Paperback, 368 pages
Published February 12th 2019 by Howard Book (first published February 2019)
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Average rating 3.97  · 
Rating details
 ·  406 ratings  ·  146 reviews

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Sarah Grace Grzy
I have heard great things about this author, so I was very excited to finally read one of her books. Right away, I was drawn into the story and didn't want to stop reading. Unfortunately, by about 40% through, I was only mildly interested in the story and characters, and the several innuendos spread throughout really irritated me. There was more than a couple of casual mentions of sex and gay couples, not to mention someone thinks the main character may be gay. I was very disappointed by these k ...more
Jan 12, 2019 rated it really liked it
Shelves: read-in-2019
Another winner by Kara Isaac!

Initially, the story line wasn't my favorite premise...girl hides secret from guy she's in love with, big blow-up and then amends are made. However, One Thing I Know was substantially more complicated than that though and for that reason I found myself more and more engaged in the novel as Rachel and Lucas' story played out.

I loved the banter between Rachel and Lucas. I adored secondary characters Scott and Anna. And the cover...lovely!

My gratitude to publisher Howar
Mlpmom (Book Reviewer)
2.5 to 3 Stars

One Thing I Know is a sweet story about understanding, second chances, and letting go of the past to make way for the present.

I saw someone else mention that this almost had a You've Got Mail feel to it and I can totally see that. Two people coming together, both with pasts and secrets that neither of them know and yet they still come together, work through it, and make it all work out.

While this did have some religious tones to it, it wasn't over powering or overbearing and inst
Storylines that revolve around secrecy can be tricky. If not handled the right way, or if based on anything that doesn’t evoke strong empathy from the reader, it can really start a story off on the wrong foot. However, when it comes to Kara Isaac, I’ve learned to trust her unique plots and instead just enjoy (and maybe agonize the teensiest bit) as I watch everything unfold.

Rachel Somers is tired of her duplicitous role in Dr. Donna’s best-selling books and much-loved advice. Her role is a means
Feb 10, 2019 rated it really liked it
One Thing I Know

Kara Isaac

ONE THING I KNOW is the first book I've ever read by Kara Isaac. The twists and turns keep coming and I had to know how it was going to end! Every time I thought I knew where this story was going, a few pages later, Kara Isaac threw me for a loop and I knew I was wrong! I'm kicking myself for not reading this wonderful novel sooner.

ONE THING I KNOW is a quick read and unputdownable! There were quite a few times when reading it that I wanted to reach into the pages and s
Sherry Deatrick
Oct 06, 2018 rated it it was amazing
I absolutely loved this book! The story line was unique and the characters were relatable and fun. And since Kara lives in New Zealand and this story takes place in Wisconsin, I wondered. But she got it spot on. I spend a lot of time in Wisconsin and she got the sports guy right and only the mention of the ‘cheeseheads’ would have made it more realistic.

This book dealt with not telling the truth and the consequences that can result, even if done for all the right reasons. Also how faith matters
Nov 13, 2018 rated it liked it
Shelves: reviews
Aw, this was a really cute romance! It was well-done and I found it nice and fluffy. :D I've read another one of Kara Isaac's books and really enjoyed it, so I had high expectations set for this one. Unfortunately, this book didn't really meet those expectations.

1) My main gripe: I found the plot.... weird. Yes, it was intriguing, interesting, and in general well thought-out, but it was really unrealistic (unlike the romance).

2) There's a decent amount of content in the book (a couple of chara
Natalie Walters
Nov 30, 2018 rated it really liked it
Author Kara Isaac offers a twist in her repertoire of romantic comedies with One Thing I Know. While readers will still find witty banter between lead characters, Rachel Somers and Lucas Grant, the plot dives into complicated territory of deception leading to the kind of tension that made it impossible to put this book down.

One of the things I appreciate about Ms. Isaac and this story in particular is the way she doesn't shy away from hard topics. This story doesn't skirt around touchy subjects
Jaime Jo Wright
Feb 25, 2019 rated it it was amazing
One Thing I Know is a beautiful walk through human struggles and triumphs. I was blessed by the array of characters that fully example life as we know it. Flawed. Blessed. Broken. Beautiful. I loved the passion with which the author’s faith weaves throughout the story and how imperfect people are portrayed as just that. Imperfect. In need of Grace. Kara Isaac’s consistency in providing quality yet realistic romance is palpable in this novel as it holds hands with a deeper dive into story that wi ...more
Cara Putman
Jun 17, 2019 rated it it was amazing
I don't like straight romance, but I gotta tell you that One Thing I Know could change my mind. Why? The characters! I absolutely adored the heroine and the way she grew to lean into friends rather than staying an island. And I loved how the hero was the flipside of her. More like her than he wanted to admit, yet brought out so much good in her. A romance with hints of comedy and a inspirational thread that was beautifully woven. ...more
Nora St Laurent
Oct 29, 2018 rated it really liked it
I enjoyed this authors’ romantic comedy that kind of reminded me of You’ve Got Mail where two characters start talking via the internet. One knows who the other is, but the other isn’t saying. They know if they reveal who they really are the relationship would end. In this case one is a radio personality and the other is a guest on the show filling in for Dr. Donna (her Aunt) because she’s on a book tour.

Rachel is unnerved, “she wasn’t sure what bothered her more: conning most of America, or the
Jun 27, 2019 rated it really liked it
One Thing I Know was a cute contemporary romance from Kara Isaac. I enjoyed the storyline and how the characters interacted with each other. It was fun...up until her secret was revealed and then things got serious. I could understand his hurt, but also could see why she did what she did...

The ending was very good and wrapped everything up nicely. I recommend this book if you enjoy this genre -- it is a good one.

*Disclosure of Material Connection: I received one or more of the products or servic
Beth Erin
Feb 18, 2019 rated it it was amazing
Full review on

What we do in the aftermath of our poor choices says a lot about who we are and/or how desperate we were at the time. Rachel has been stuck between a rock and a hard place long enough to appreciate a restful night’s sleep on a hardwood floor. Truly, her backstory breaks my reader heart and I completely understand how she and Aunt Donna got themselves in the big stinky (and ever-growing) pickle they’re in.

Lucas can’t help but stand up for (and often to) his pe
Dec 27, 2018 rated it it was amazing
In One Thing I Know author Kara Isaac once again combines flawed, realistic and loveable character with seamless writing, humour, friendship and messages of faith, hope and forgiveness. I found One Thing I Know to be utterly delightful and a pleasure to read.

Rachel Somers lives a double life. She is the author of the famous Dr Donna relationship advice books but plays the part of helpful assistant while her Aunt Donna is the face of the books. She does what she has to to pay her father’s medica
Kay (aka) Miss Bates
Feb 27, 2019 rated it really liked it
When a romance author is recced by Ros Clarke, I seek her out. That’s how I came to new-to-me-inspirational-romance-author Kara Isaac’s One Thing I Know. It was like no inspirational romance I’d read. Hero and heroine, Lucas Grant and Rachel Somers, come with heavy baggage; how their paths cross and they fall in love is a fraught journey. Looking back, they’ve got things to work out, looking forward sometimes seems impossible. That’s the genre’s beauty: all things are possible even when they see ...more
Jan 13, 2019 rated it really liked it
Well, where to start?
How about one of my favourite quote from the book.

“Sometimes things really are that uncomplicated; the rest is just baggage”
Lucas and Rachel have had childhoods full of hurt caused by the ones who were supposed to protect them. Each one has carried on somehow - one with a heart full of regrets and the other full of judgment. These scars should make them kindred spirits but the sparks that fly at first are not really friendly.

And then, their banter and awkwardness turn overly
Feb 19, 2019 added it
Shelves: review, 2019
One Thing I Know by Kara Isaac | Book Review

STORY | If there’s one thing that’s affecting Rachel Somers, it’s a lie. Not only is she lying to herself, she’s also managed to fool America. She didn’t intend for this to happen, but it has, and now she’s a #1 best-selling relationship expert. The lie? America doesn’t know that it’s Rachel, and instead things the expert is Rachel’s aunt, Donna, the woman who’s the “face” of this farce.

Trouble comes calling when Lucas Grant is tasked with finding out
Aimee (Getting Your Read On)
I found this story line completely refreshing. I don't think I've read anything quite like it before and that kept me interested from beginning to end. The way that Lucas and Rachel meet and how their lives intersect and intertwine was original to me. I've been feeling a bit overdone with Billionaires, so it was nice to read about two regular people with difficult life choices facing them.

Rachel is caught between a rock and a hard place. Secrets can be so heavy- pushing down on peace and joy. I
Feb 22, 2019 rated it it was amazing
In her familiar style, Kara Isaac skillfully weaves together a delightful romance, filled with twists and turns, and makes you wonder if it's really going to turn out okay or not. I love the way she always makes me think about what I would do in a certain situation. I appreciate her honest writing, and her willingness to pull back the curtain on the very real and raw life that exists outside the bubble some Christians like to live in. Well done, Kara! ...more
Nov 25, 2018 rated it really liked it
Usually, as I go through each stage of reading a book, my mind wanders to how I'm feeling about it. There were moments in the beginning pages, where I felt a little thrown. This is quite a common feeling when you are familiar with an author's work, in which you feel 'secure' in the writing style and material. It felt different, is different. As I reflected back on Isaac's previous books I realized that she has the ability to take a conflict and weave it into her characters in a way I appreciate. ...more
Susan Snodgrass
Jan 14, 2019 rated it it was amazing
'I know that when nothing makes sense and life is as hard as it's ever been, God is even more present in the middle of all the brokenness. Because Jesus changes everything.'

How do you even begin to write a review that truly expresses how you feel about a book that is just so tremendous, you weep through parts of it?

For years Rachel Somers has been ghostwriting her Aunt Donna's best selling books. She doesn't want to, but it takes the big bucks the books make to pay for her father's expensive hea
Tracy  C
Nov 19, 2018 rated it it was ok
2 1/2 stars. I really struggled to connect with this one. Lucas and Rachel spent hardly any time together, yet they were madly in love? This was really about Rachel's struggle with the Dr. Donna deception and her past with her father. Also, reader be aware: IMO, this should have been tagged as Christian or Religious. Not my cup of tea. ...more
Melissa (LifeFullyBooked)
Feb 18, 2019 rated it really liked it
I really loved this novel. It has everything I have come to expect from a Kara Isaac book--realistic characters and situations and struggles with doing the right, godly thing vs. doing the easy thing.
I appreciated her balance of bits of humor alongside exploring what it means to hide and exactly how the truth can set a person free--even if the consequences for lying/deception still exist. Lucas and Rachel both wrestle with their pasts and how those pasts have a direct effect on their present liv
Jun 15, 2020 rated it it was amazing
Such a fun read! I love the humor in Kara's stories and this did not disappoint. It was a fun story line and kept me interested throughout. Her books are faves for me! ...more
Melissa Henderson
Dec 09, 2018 rated it really liked it
Secrets are always revealed in one way or another. In this heartfelt story, the reader finds personality conflicts, family and honesty issues, secrets, heartache and yet also, finds hope, trust and love. I received a complimentary copy of this book and this is my honest opinion. No review was required.
Feb 05, 2019 rated it really liked it
Shelves: netgalley
Rachel is the ghost-writer for her Aunt Donna's very successful relationship books and column, "Ask Donna". This is quite ironic, given she has few relationships herself. Lately, she's been feeling guilty about the deception and wants to either quite writing or come clean about it. When she meets sport talk show host/relationship coach (because women call in and ask him relationship advice), Lucas, the sparks fly but she tries her best to avoid them. Meanwhile, her aunt is scheming to throw them ...more
Fiction Aficionado
Feb 07, 2019 rated it really liked it
Readers who are already familiar with Kara Isaac’s writing will find this story has a slightly more serious tone than her previous novels, although it’s definitely not without the humour and wit that I love in her writing. Case in point: “There were some things that were sacred, and walking into Barnes & Noble without running into a cardboard version of yourself was one of them.” It’s also different in that the main characters aren’t believers; the spiritual input in this novel comes via seconda ...more
Rebekah Brown
Mar 15, 2020 rated it really liked it
Full disclosure- I rarely read contemporary fiction. I enjoy historical Christian fiction much more, but I always make an exception for Kara Isaac.. Her characters are always developed and their dialogue is always ON POINT. Then There Was You, was no exception.

Wow, I was feeling all the emotions in this book. On the verge of tears when reading about Ann & Cam to a silly smile and a chuckle when reading some of Rachel and Lucas’ bantering. I loved Lucas’ family! There are several rough family is
M. Marinan
Oct 15, 2019 rated it it was amazing
This review has been hidden because it contains spoilers. To view it, click here.
Oct 20, 2019 rated it really liked it  ·  review of another edition
Kara writes about sweet, but messy relationships where forgiveness and truth are the issues. Enjoyed the story and the characters.
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Kara Isaac lives in Wellington, New Zealand. When she's not chasing three hobbit-sized little people, she spends her time writing horribly bad first drafts and wishing you could get Double Stuf Oreos in New Zealand. She is the author of the RITA Award-winning Then There Was You, along with four other contemporary romances. She loves to connect with readers on GoodReads, Twitter, Instagram, Faceboo ...more

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“I know that when nothing makes sense and life is as hard as it's ever been, God is even more present in the middle of all the brokenness. Because Jesus changes everything.” 0 likes
“I know that when nothing makes sense and life is as hard as it's ever been, God is even more present in the middle of all the brokenness. Because Jesus changes everything.” 0 likes
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