M.J. Arlidge has worked in television for the last twenty years, specialising in high-end drama production, including prime-time crime serials Silent Witness, Torn, The Little House and, most recently, the hit ITV show Innocent. In 2015 his audiobook exclusive Six Degrees of Assassination was a number-one bestseller. His debut thriller, Eeny Meeny, was the UK's bestselling crime debut of 2014 and has been followed by ten more DI Helen Grace thrillers - all Sunday Times bestsellers.

Julia Crouch is the author of ten internationally published Domestic Noir novels: Cuckoo, Every Vow You Break, Tarnished, The Long Fall, Her Husband's Lover, The New Mother, The Daughters, The Perfect Date, The Surprise Party and The Wrong Child. She has also written eleven plays and is developing a screenplay. She teaches for UEA, Faber Academy and the National Centre for Writing, and mentors writers trying to start, finish or polish a novel. Once a committed pantser, she is now an avid plotter.