Wallace was inspired by a visit to the United States and, in particular, the Saint Valentine's Day Massacre.

[2] The lead role of a Capone-like gangster Tony Perelli was played by Charles Laughton with Emlyn Williams as his henchman and Gillian Lind playing Perelli's Chinese mistress.

[1] Other cast members included Roy Emerton, Carol Reed, Dennis Wyndham and Gladys Frazin.

[2] It transferred to America in October 1930 and ran for 167 performances at the Forrest Theatre in New York.

Directed by Robert Florey for Paramount Pictures it starred Anna May Wong and Akim Tamiroff.