top of page
Top of Blog





  • Writer's pictureJudith D Collins

I Know What You Did

By: Cayce Osborne

ISBN: 9781639103294

Publisher: Crooked Lane Books

Publication Date: 07/18/2023

Format: Other

My Rating: TBR (ARC)


When a bestselling novel fictionalizes the death of her childhood best friend—and accuses her of the murder—Petal Woznewski must figure out who wrote it and why. Truth and fiction collide in this captivating debut novel by Cayce Osborne.

Petal Woznewski is content with her quiet, introverted life in New York City: she has her junk food, her movies, and her on-again, off-again boyfriend, Gus. That peace is shattered when her name appears on the dedication page of an anonymously written thriller with a cryptic note: “I know what you did, Petal Woznewski. And now everyone else will, too.”

As she reads, Petal realizes the story is rooted in a secret she buried thirty years earlier, when she was fourteen. A secret involving the tragic death of her friend, Megan. A secret that only one other person knows—their old friend, Jenny. Armed with a copy of the book and her own suspicions, Petal returns to her hometown of Madison, Wisconsin. There, she discovers more questions than answers. Jenny has disappeared, and Petal’s old high school crush, Ben, doesn’t know anything about the book—at least not anything he’s telling.

As sinister clues pile up, and the thriller’s plot detours dangerously from the facts, Petal has no choice but to confront her past and solve the mystery of who wrote it—before her very real life ends as tragically as the novel.

Buy the Book



“A whip-smart and thoroughly engaging psychological thriller, with a highly memorable protagonist and a brilliantly original narrative concept. I raced through I Know What You Did in a matter of days and found it a brilliantly fresh voice in the psychological thriller genre.” —Philippa East, author of I’ll Never Tell

About the Author

I've been a writing tutor, a news monitor, a graphic designer, a feature writer, and an associate editor for a literary magazine. I currently work in science communication and public engagement at the University of Wisconsin-Madison. In early 2015, I began consistently writing fiction for the first time.

When not writing, I spend my time being a mom, cooking, traveling, stalking the shelves at my local library, and subscribing to way too many streaming services. I live in Madison, Wisconsin, with my husband Mike, two crazy boys, and one goofy Australian Shepherd named Confetti.

Visit my Writing page to find my latest short story publications—several are available to read online for free. My first novel, I Know What You Did, publishes July 18, 2023, and is now available for preorder. WEBSITE

bottom of page