In this second Carter mystery, a mysterious rash of cargo ships sinking in Panama leads insurers Llewellyns of London to hire vacationer Nick Carter and his eccentric associate Bartholomew to investigate. Nick recognizes influential nightclub owner Al Taurez as a shady operator, but getting the goods on him depends on slick diversions involving the heavyweight champ of the Pacific Tuna Fleet, a Panamanian bombshell armed with American slang, a young couple in love and a whole raft of crooks and cutthroats.

Two rich and wealthy millionaires who have a lot of money bet that reporter Wally Jones can't spend $720,000 in twelve hours.

Carmelita Fuentes is a fiery-Latin singer/dancer in Mexico City who has designs on Dennis Lindsay, an American publicity agent, for unclear reasons, while Lindsay's shiftless uncle Matthew Lindsay aids and abets her every step of the way to the marriage altar.

Awkward Annie loves her sharpshooting rival in Buffalo Bill's Wild West Show.

The Marx Brothers are employed at a hotel in postwar Casablanca, where a ring of Nazis is trying to recover a cache of stolen treasure.