Girl in Room 13 (also known as A Moça do Quarto 13 in Brazil, and as Agente secreto 013 in Mexico) is a 1960 American film starring Brian Donlevy and directed by Richard E. Cunha.
American detective Steve Marshall goes to São Paulo, Brazil, in search of fugitive murderer Louise Dunning. Marshall contacts Louise and she explains that she murdered her husband in self-defense. Meanwhile, Marshall stumbles upon a counterfeiting ring and becomes a suspect. He unwittingly helps the police set a trap to catch the gang and, after a double-cross, the criminals are captured. Louise decides to remain in Brazil.
A review in TV Guide describes the film as a "Brazilian quickie," with "an aging Donlevy wasted as a private eye from the States who is tracking a murderer. [...] Not an elegant way for Donlevy to wind down his career." A synopsis of the film at AllMovie describes the Donlevy character as a "gringo gumshoe."