Checkmate enlists the help of a Major in the Marines to prevent an action taken against the widow of a dead private, whom the Marines claim never lived.
| Name | Type | Role | |
|---|---|---|---|
| William McGivern | Writer | ||
| Harold Clements | Writer | ||
| Tyler McVey | Guest Star | ||
| Margaret O'Brien | Guest Star | ||
| Sue Ane Langdon | Guest Star | ||
| Katherine Warren | Guest Star | ||
| Richard LePore | Guest Star | ||
| Forrest Lewis | Guest Star | ||
| Joe Corey | Guest Star | ||
| Don Weis | Director |