London hides its secrets well — until Detective Sarah Mercer starts looking.

In this collection of five gripping crime mysteries, Sarah investigates cases that take her from the marble countertops of a Kensington townhouse to the locked ward of a psychiatric hospital, from a five-star hotel room to the quiet street where a colleague vanished without a trace.

Each case tests her instincts, her patience, and her ability to see what everyone else has missed. But as the stories unfold, Sarah begins to notice a pattern connecting them — one that reaches further into her own past than she expected.

Perfect for fans of atmospheric British crime fiction and detectives who refuse to let a case go cold.