Jane Casey is no stranger to the crime world. Married to a criminal barrister, she’s got the inside track on some of the country’s most dangerous offenders, giving her writing an unsettlingly realistic feel.

This authenticity has made her novels international bestsellers and critical successes.

They have been nominated for several awards and in 2015 Jane won both the Mary Higgins Clark Award and Irish Crime Novel of the Year for The Stranger You Know and After the Fire, respectively.

She is also an active member of Killer Women, a London-based group of crime writers. Born in Dublin, Jane now lives in southwest London with her husband and two children.

Mark Billingham has twice won the Theakston's Old Peculier Award for Crime Novel of the Year, and has also won a Sherlock Award for the Best Detective created by a British writer.

Each of the novels featuring Detective Inspector Tom Thorne has been a Sunday Times bestseller.

Sleepyhead and Scaredy Cat were made into a hit TV series on Sky 1 starring David Morrissey as Thorne, and a new series based on the novels In the Dark and Time of Death will be broadcast on BBC1 in 2017.

Mark lives in north London with his wife and two children.

James Oswald is the author of the Sunday Times bestselling Inspector McLean series of detective mysteries, as well as the new DC Constance Fairchild series.

James's first two books, Natural Causes and The Book of Souls, were both short-listed for the prestigious CWA Debut Dagger Award.

As Cold as the Grave is the ninth book in the Inspector Mclean Series. James farms Highland cows and Romney sheep by day, writes disturbing fiction by night.

C.L. Taylor is a Sunday Times bestselling author. Her psychological thrillers have sold over a million copies in the UK alone, been translated into over twenty languages, and optioned for television.

Her 2019 novel, Sleep, was a Richard and Judy pick. C.L. Taylor lives in Bristol with her partner and son.