E.C.H.O., a secret organization with a strange name masterminds a bizarre plot to take over the world by dosing important `nerve centers' with super potent LSD. The only man who can stop them is Rex, a secret agent working for an undisclosed organization.
| Directing | Massimo Mida | Director |
| Writing | Bruno Baratti | Writer |
| Writing | Odoardo Fiory | Writer |
| Sound | Egisto Macchi | Music |
| Production | Marino Vaccà | General Manager |
| Writing | Tiziano Cortini | Story |
| Writing | Massimo Mida | Writer |
| Costume & Make-Up | Lidia Puglia | Hairstylist |
| Writing | Vittorio Orano | Story |
| Camera | Giovanni Canfarelli Modica | Assistant Camera |
| Costume & Make-Up | Gianfranco Ramacci | Costume Design |
| Camera | Enrico Sasso | Camera Operator |
| Production | Benito Bertaccini | Producer |
| Costume & Make-Up | Fernando De Rossi | Makeup Artist |
| Camera | Silvano Ippoliti | Director of Photography |
| Production | Mario Caporali | Production Supervisor |
| Directing | Sergio Bazzini | Assistant Director |
| Directing | Renata Clerici | Script Supervisor |
| Editing | Pino Giomini | Editor |
| Art | Gianfranco Ramacci | Art Direction |
