What She Knew by Gilly Macmillan

In her captivating debut, Gilly Macmillan weaves a psychological thriller that will grip you from the very first page. Perfect for fans of The Girl on the Train and The Guilty One, What She Knew is a heart-wrenching exploration of a mother’s worst nightmare and the dark secrets lurking behind those closest to her.

In a heartbeat, everything changes...

Rachel Jenner is a devoted mother, but her world shatters in an instant during a Sunday afternoon walk in a Bristol park. When her eight-year-old son, Ben, asks if he can run ahead, Rachel sees no harm in it. It's an innocent request on a seemingly ordinary day—until Ben disappears without a trace.

As the hours turn into days and there’s still no sign of Ben, panic sets in. The police launch an investigation, search parties comb the area, and Rachel’s life begins to unravel. Recently divorced and already struggling, she feels herself spiraling into despair. The media swarms in, and public sympathy quickly turns to suspicion, pointing fingers at Rachel herself. Was she an inattentive mother? Could she have something to hide?

As the investigation deepens, everyone who knew Ben comes under scrutiny—Rachel's newly married ex-husband, her seemingly perfect sister, and even Rachel herself. With the pressure mounting and the clock ticking, Rachel is forced to confront unsettling truths about those she trusted most. As she pieces together the fragments of what happened, she realizes that the greatest danger may not come from a stranger, but from those who are closest to her.

Where is Ben? The race against time has begun, and Rachel must navigate a web of deception, suspicion, and hidden motives to find her son before it’s too late.

What She Knew is a gripping psychological thriller filled with taut suspense, shocking twists, and a mother’s relentless determination to find the truth, no matter the cost.