Before Mike can investigate the disappearance of a pair of skin-diving geologists, one turns up dead on the beach bearing marks resembling the suction valves of a giant octopus.
| Name | Type | Role | |
|---|---|---|---|
| Arthur Weiss | Writer | ||
| Mari Aldon | Guest Star | ||
| Vance Skarstedt | Guest Star | ||
| John Aberle | Guest Star | ||
| Steve Mitchell | Guest Star | ||
| Phil Barnes | Guest Star | ||
| Willis Bouchey | Guest Star | ||
| Glen Dixon | Guest Star | ||
| Peter Hansen | Guest Star | ||
| Andrew Marton | Director |