It's Not Her is the gripping standalone psychological thriller by New York Times bestselling author Mary Kubica, the acclaimed writer behind Local Woman Missing and The Good Girl. Packed with family secrets, shocking twists, missing persons, murder, and psychological suspense, this pulse-pounding novel keeps readers guessing until its unforgettable ending. Perfect for fans of Freida McFadden, Lisa Jewell, Shari Lapena, Megan Miranda, and Jeneva Rose, It's Not Her delivers an addictive mystery that explores how well we truly know the people we love.

What begins as a peaceful family vacation at a secluded lakeside resort quickly turns into a nightmare when Courtney Gray discovers her brother and sister-in-law brutally murdered inside their cabin. While her young nephew is found safe upstairs, her niece Reese has vanished without a trace. As investigators descend on the quiet resort, unsettling secrets begin to emerge—not only about Courtney's family, but also about the seemingly idyllic lakeside community. With suspicion falling in every direction, Courtney races to uncover the truth before more lives are destroyed, only to discover that nothing is as it seems and no one can be trusted.

It's Not Her Hardcover – A Twisty Psychological Thriller Filled with Family Secrets

Combining relentless suspense with emotionally layered characters, It's Not Her is a fast-paced thriller that masterfully blends mystery, crime, and family drama. Every revelation uncovers another shocking twist, making this bestselling standalone novel an ideal choice for thriller lovers, mystery book clubs, and readers searching for an unforgettable psychological suspense novel.

Product Details

Title: It's Not Her: A Twisty Thriller about Two Families and a Chilling Lake Resort Crime

Author: Mary Kubica

Format: Hardcover

Series: Standalone Novel

Genre:

• Psychological Thriller
• Mystery
• Suspense
• Crime Fiction
• Domestic Thriller

Pages: 352

Dimensions: 1.16 x 8.99 x 6.38 inches

Publication Date: February 3, 2026

Features:

• Standalone psychological thriller
• New York Times bestseller
• Missing child mystery
• Murder investigation
• Family secrets
• Lake resort setting
• Multiple shocking twists
• Fast-paced suspense
• Deluxe hardcover edition
• Book club favorite

Author Biography

Mary Kubica is the New York Times and USA Today bestselling author of acclaimed psychological thrillers including Local Woman Missing, The Good Girl, The Other Mrs., She's Not Sorry, and It's Not Her. Known for her emotionally compelling characters and expertly crafted plot twists, Kubica has become one of today's most popular suspense writers. Her novels have been translated into more than thirty languages and have captivated millions of readers around the world.