Someone is killing people related to a South American expedition. The means of murder are poison darts with rubber spiders attached to them. A writer and some police detectives investigate.
O.W. Fischer
Karin Dor
Doris Kirchner
Werner Peters
Eddi Arent
Klaus Kinski
Claude Farell
Gabriel Llopart
Fernando Sancho
José María Caffarel
Antonio Casas
Tomás Blanco
Félix Dafauce
Cris Huerta
Ángel Menéndez
George Rigaud