"Killer in the Rain" is a 1935 Raymond Chandler short story that the author incorporated into his novel The Big Sleep. In both works the narrator is the private detective Philip Marlowe, who returns to the La Verne Terrace house of Harold Steiner. (In the novel, Steiner, renamed Geiger, is a pornographer and blackmailer.) Previously Marlowe had found his client's daughter Carmen in the house with the corpse of the owner, and Marlowe has driven Carmen home in her own car, leaving his near La Verne Terrace. Marlowe returns in a taxi, and he wants to search Steiner's house to find out about the murder.
But he doesn't want the cab driver to remember dropping him off in front of a house that will be reported as the scene of a murder. So he has the cabby drop him off on a nearby street, in front of a house that looks like it has visitors, hoping that if the cabby remembers him at all, it will be as a party-goer.
Joe has it right.