Sam Spade is hired by the fragrant Miss Wonderley to track down her sister, who has eloped with a louse called Floyd Thursby. But Miss Wonderley is in fact the beautiful and treacherous Brigid O`Shaughnessy, and when Spade`s partner Miles Archer is shot while on Thursby`s trail, Spade finds himself both hunter and hunted: can he track down the jewel-encrusted bird, a treasure worth killing for, before the Fat Man finds him?