In 1985, a ten-year-old girl and her mother vanished in the night without a trace. The mystery of their disappearance was never solved, and the case went cold. Twenty-five years later, a Sullivan's Island resident takes interest in the disappearance, and their story finally starts to unfold...all while the perfectly-carved lives of three friends-Beth, Sarah, and Mary Ellen-become hopelessly enmeshed in secrets, lies, and regrets.

When you live in a small island town, you learn to keep secrets because your past never leaves you. But just because it's a small town, doesn't mean its secrets are small.

Beth decides to Google her boyfriend, only to find out he has a dark, sad secret. Sarah witnesses her daughter cause a fatal car accident and now she's faced with an impossible decision. Should she report the mistake that could ruin her child's life forever, or take matters into her own hands? Mary Ellen discovers that the passenger in a fatal accident is connected to an unsolved missing person's case. But before she can tell anyone, she is rendered unconscious. The three friends are suddenly entangled in a frightening web of danger, mystery, and deceit. Then one night, it all ends in murder...

If You Don't Tell is a page-turning suspense novel full of twists, turns, and dark secrets, intricately spun in a compelling plot until the very last page.