Tuppence appears as a charismatic, impulsive, and intuitive person while Tommy is less imaginative and less likely to be diverted from the truth (as their first adversary sums him up: "he is not clever, but it is hard to blind his eyes to the facts") which is why they are shown to make a good team.

Thomas "Tommy" Beresford is introduced as a young redheaded Englishman who fought in the Great War, wounded twice.

They are asked to search for Jane Finn, a survivor of RMS Lusitania's sinking who disappeared along with documents of a secret treaty.

Their third recorded case takes place during World War II, and the couple has reached their middle age.

Tuppence is determined to locate the missing woman, and in the process learns of an unsolved series of child murders.

In 1953 the BBC adapted Partners in Crime as a radio series starring Richard Attenborough and Sheila Sim.

[5] The Tommy and Tuppence characters have been portrayed on television by James Warwick and Francesca Annis, first in the feature-length The Secret Adversary (1982), and then in the 10 episode series Agatha Christie's Partners in Crime (1983).

[6] The novel By the Pricking of My Thumbs was adapted in 2005 by the French director Pascal Thomas with the title Mon petit doigt m'a dit....

The film casts André Dussolier as Tommy (renamed Bélisaire) and Catherine Frot as Prudence Beresford.

In 2015 BBC television aired Partners in Crime, it starred David Walliams as Tommy[8] and Jessica Raine as Tuppence.