Down-on-his-luck Mike Cormack is hired to fly to a Caribbean island to retrieve a missing ruby. On the island, possibly involved with the ruby's disappearance, is his ex-girlfriend.

John Payne
as Mike Cormack

Mary Murphy
as Janet Martin

Francis L. Sullivan
as Barzland

Eduardo Noriega
as Inspector Peña

Arnold Moss
as Paul Armand

Walter Reed
as Lawrence

Szabó Sándor
as Johann Torbig

Pepe Hern
as Lalo

Robert Cabal
as Miguel

Paul Picerni
as Eduardo Martin