InMurder on the Orient Express (1934) Agatha Christie writes a variation on Ten Little Indians, gathering together a diverse set of characters and focusing on the murder of one of them. This time, though, Hercule Poirot, a Belgian detective, solves the crime.

Dorothy L. Sayers's Strong Poison (1930) centers on Lord Peter Wimsey's determination to find out who poisoned novelist Harriet Vane's fiancé.

The Adventures of Sherlock Holmes, a collection of short stories published in 1892, introduces Sir Arthur Conan Doyle's famous detective and his sidekick, Dr. Watson, in four classic mysteries.

In P. D. James's Innocent Blood (1980) Philippa Palfrey meets her biological mother and discovers the shocking mystery that surrounds her.