Terror by Night (1946)
overview : Holmes is hired by Roland Carstairs to prevent the theft of the Star of Rhodesia, an enormous diamond owned by Carstairs' mother, Lady Margaret. Believing the diamond will be stolen on a train trip from London to Edinburgh, Holmes deftly switches diamonds with Lady Margaret while in her compartment. Soon after, Roland is murdered and the fake diamond is stolen.
Genres : Mystery, Drama, Crime, Action
Tags : mathematics, sherlock holmes, private detective, jewel theft, gin rummy