The 73 gets a new crew member, who turns out to be a trouble-maker. McHale and the 73 crew cook up a wild plan to get rid of him, but, when their plan backfires, they find themselves in hot water again. So, they turn to their new Crewman, and use his special physical qualities to their advantage.
| Name | Type | Role | |
|---|---|---|---|
| Arthur Marx | Writer | ||
| Bob Fisher | Writer | ||
| Barbara Brent | Guest Star | ||
| John Rodney | Guest Star | ||
| Jane Dulo | Guest Star | ||
| Sally Mansfield | Guest Star | ||
| Tony Franke | Guest Star | ||
| Sidney Lanfield | Director |