*The Sunday Times bestseller* ‘Smart, sassy and totally on point.’ SARAH PINBOROUGH, BESTSELLING AUTHOR OF BEHIND HER EYES ‘Fast-paced and full of excitement…It kept me gripped.’KATERINA DIAMOND, AUTHOR OF THE TEACHER YOU HAVE SIX SECONDS TO READ THIS MESSAGE…The body of a 15-year-old is found hours after she sends a desperate message to her friends. It looks like suicide, until a second girl disappears.This time, the message is sent directly to the Metropolitan Police – and an officer’s younger sister is missing.DS Nasreen Cudmore and journalist Freddie Venton will stop at nothing to find her. But whoever’s behind the notes is playing a deadly game of hide and seek – and the clock is ticking.YOU HAVE 24 HOURS TO SAVE THE GIRL’S LIFE.MAKE THEM COUNT.