The switchboard operator in an apartment building falls in love with a businessman who lives in the building, whom she has gotten to know only over the phone. When she discovers that the man's current girlfriend is actually part of a scheme to swindle him out of some mineral rights he owns, she devises a plot to save him and expose the con artists.
| Actor | Role |
|---|---|
 Cary GrantJulian De Lussac | Julian De Lussac |
 Frances DrakeAnna Mirelle | Anna Mirelle |
 Edward Everett HortonPaul Vernet | Paul Vernet |
 Nydia WestmanSusi Flamberg | Susi Flamberg |
 Rafael CorioRamon Cintos | Ramon Cintos |
 Rosita MorenoMarguerite Cintos | Marguerite Cintos |
 George BarbierJoseph Flamberg | Joseph Flamberg |
 Charles RayHenri | Henri |
 Charles ArntAlbert | Albert |
 Ann SheridanAdele | Adele |
| HHenrietta BurnsideOperator | Operator |
| JJoseph NorthButler | Butler |