By the Pricking of My Thumbs By the Pricking of My Thumbs By The Pricking of My Thumbs is a work of detective fiction by Agatha Christie and first published in the UK by the Collins Crime Club in November 1968 and in the US by Dodd, Mead and Company later in the same year. The UK edition retailed at twenty-one shillings (21/-) and the US edition at $4.95. It features her detectives Tommy and Tuppence Beresford. Tommy and Tuppence were unusual in that they aged from novel to novel unlike Miss Marple and Hercule Poirot, whose age remained more or less the same from Christie's
Armchair Detectives to play along with the in-studio detectives. Each episode features a story set in the fictional Scottish village of Mortcliff (taken from "mort" meaning death and "cliff" as in cliffhanger). The in-universe investigations are led by detectives DI Knight and DC Slater, and forensic expert Officer Simmons. A team of three "armchair detectives" have to try to solve the murder. While there is no physical interaction with suspects, players view footage of events such as the finding of the body and the victim's last known whereabouts. They are also able to view physical evidence such as forensics or photos. The