When the elderly woman sponsoring a treasure hunt is murdered on board her docked ship, Charlie Chan must deal with a treasure map in four pieces, the ghost of a hanged pirate, a talking parrot, a recalcitrant sea captain and several suspicious passengers - and a second murder.

An upper-class female reporter is (despite herself) attracted to a hulking laborer digging a tunnel under the Hudson River.

On the evening of his decoration for bringing a murderer to justice, Washington DC Police Captain Frank Matthews' wife, and her lover are murdered in bed. Jailed as the prime suspect, with the aforementioned murderer released on a technicality Matthews escapes in search of the man he believes to be the real killer.

A broke playboy signs on to help a young beauty save her ailing bus line.