An industrial accident traps Kimball and some government workers underground. A member of the trapped group wants to turn Kimball in as soon as they are rescued. To add to Richard's problems, Lt. Gerard is waiting above at the only exit.
| Name | Type | Role | |
|---|---|---|---|
| Paul Lucey | Writer | ||
| Harry Kronman | Writer | ||
| Peter R. Brooke | Writer | ||
| Dennis Cross | Guest Star | ||
| Christine White | Guest Star | ||
| John McLiam | Guest Star | ||
| Ed Deemer | Guest Star | ||
| Stephen McNally | Guest Star | ||
| Richard Schuyler | Guest Star | ||
| Nan Martin | Guest Star | ||
| Richard Anderson | Guest Star | ||
| Paul Lambert | Guest Star | ||
| Barry Morse | Guest Star | ||
| Jason Wingreen | Guest Star | ||
| Walter Grauman | Director |