Orson Welles plays Irish seaman Michael O'Hara who rescues the beautiful Rita Hayworth from three muggers in Central Park. Sparks fly, but it turns out the lady is married to a crippled, but brilliant criminal attorney played by Everett Sloane. Sloane nevertheless takes a shine to Welles and hires him to skipper his yacht. Murder, intrigue, and betrayal follow. Welles made this silky film noir as his marriage to Hayworth was self-destructing, and some see it as his attempt to rekindle their romance.
Fascinated by gorgeous Mrs. Bannister, seaman Michael O'Hara joins a bizarre yachting cruise, and ends up mired in a complex murder plot.