Plantation owner Rock Dean and scientist Dr. Andrea Romar 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 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 |