Dr. Jake Terrell, who has been training a pair of dolphins for many years, has had a breakthrough. He has taught his dolphins to speak and understand English, although they do have a limited vocabulary. When the dolphins are stolen, he discovers they're to be used in an assassination attempt. Now he is in a race to discover who is the target, and where the dolphins are, before the attempt is carried out.
| Directing | Mike Nichols | Director |
| Writing | Buck Henry | Screenplay |
| Writing | Robert Merle | Novel |
| Production | Dick Birkmayer | Associate Producer |
| Production | Joseph E. Levine | Executive Producer |
| Production | Robert E. Relyea | Producer |
| Sound | Georges Delerue | Original Music Composer |
| Camera | William A. Fraker | Director of Photography |
| Editing | Sam O'Steen | Editor |
| Art | Richard Sylbert | Production Design |
| Art | Angelo P. Graham | Art Direction |
| Art | George R. Nelson | Set Decoration |
| Costume & Make-Up | Anthea Sylbert | Costume Design |
| Costume & Make-Up | Del Acevedo | Makeup Artist |
| Costume & Make-Up | Edwin Butterworth | Makeup Artist |
| Costume & Make-Up | Dorothy Byrne | Hairstylist |
| Production | Tim Zinnemann | Production Manager |
| Directing | Thomas J. Schmidt | Assistant Director |
| Directing | Michael Haley | Second Assistant Director |
| Sound | Larry Jost | Sound |
