S1/E5 is written by Charlotte Coben, daughter of author Harlan Coben on whose 2015 novel the series is based.
In episode 6, Kimberley Doyle is asked to meet at Bolitar Hotel. Myron Bolitar is a main character in a series of Harlan Coben's books.
Based on the thriller titled 'The Stranger' by New York crime writer Harlan Coben, published in 2015.
Opening Theme song is 'Monster', written and performed by Irish band 'Walking on Cars'
Paul Kaye plays a police officer called Patrick Katz. He has used the surname of his real life wife; Orly Katz.