Rock and Dr. Andrea travel up the Amazon to find out why the plantation workers have left their work in panic, allegedly because of attacks from Curucu, a monster who is said to live up the river where no white man has ever been before...
| Actor | Role |
|---|---|
 John BromfieldRock Dean | Rock Dean |
 Beverly GarlandDr. Andrea Romar | Dr. Andrea Romar |
| TTom PayneTupanico | Tupanico |
| HHarvey ChalkFather Flaviano | Father Flaviano |
 Sérgio de OliveiraCaptain of Police | Captain of Police |
 Larri ThomasVivian - the dancer | Vivian - the dancer |
| WWilson VianaTico | Tico |
 Andrea BayardRita - the Secretary | Rita - the Secretary |
 Luz del FuegoSnake dancer | Snake dancer |
| AAyres CamposNot listed | Not listed |
| RRosa MaríaNot listed | Not listed |
| RRoberto AurelNot listed | Not listed |
| FFrank BevanNot listed | Not listed |