Partners in Crime (UK TV series) commissioned by Ben Stephenson and Charlotte Moore for the BBC to mark the 125th anniversary of Agatha Christie's birth. The adaptation was produced by Endor Productions in partnership with Agatha Christie Productions. David Walliams and Hilary Strong (Agatha Christie Group) approached Hilary Bevan Jones and Tom Nash (development producer) of Endor Productions with the idea of re-inventing the Agatha Christie characters Tommy and Tuppence Beresford. Walliams liked the idea of a married amateur detective duo bickering over a dead body. Agatha Christie wrote stories featuring the Beresfords between 1922 and 1973, depicting Tommy and Tuppence from before they were married
Detectives Inc. follow Will Eisner's influential "A Contract with God". The Gay League's "LBGT Comics Timeline" cites the book as "featuring the first lesbian characters in mass-market comics". The books' genesis, author Don McGregor recalled, had gone back several years. "I had created "Detectives Inc." as early as 1969, as roles for Alex Simmons and myself to play in Super8 millimeter movies I was making". In the early 1970s, the two produced a crude "Detectives Inc." comic book, self-published via photocopier. In 1980, Eclipse Enterprises published "Detectives Inc.: A Remembrance of Threatening Green", the first of what would become two graphic novels