A scientific society hires Mike to obtain fossil samples from a newly-discovered underwater cavern for the purpose of authentication.
| Name | Type | Role | |
|---|---|---|---|
| Arthur Weiss | Writer | ||
| Michael Cleary | Writer | ||
| Frank Logan | Guest Star | ||
| Connie Hines | Guest Star | ||
| John Gallaudet | Guest Star | ||
| Mike Keene | Guest Star | ||
| Maurice Dallimore | Guest Star | ||
| Jack Herzberg | Director |