Hide and seek

Detective Helen Grace is locked up in HM Prison Holloway, a place she once helped fill. Convicted of a killing she did not commit, she is now among the most recognisable new arrivals, and many of the people she has crossed over the years are serving time in the same building. Her enemies are close, and she knows it.

When an inmate is found mutilated inside her own locked cell, it becomes clear the killer is someone within the prison walls. Helen must work out who set her up while the death toll inside keeps rising. The investigation forces her to rely on everything she learned as a police officer, from her methods to her gut instincts.

The novel is a tense, fast-moving crime story with a serial killer at its centre. It is the fourth book in M. J. Arlidge's Helen Grace series and suits readers who enjoy claustrophobic prison settings and detective-led puzzles.