British racing car driver Morrison is killed in a local race. The driver's chief mechanic presents evidence to M Squad that indicated the car may have been tampered with before the accident.
| Name | Type | Role | |
|---|---|---|---|
| Whitman Chambers | Writer | ||
| J. Pat O'Malley | Guest Star | ||
| Mary Munday | Guest Star | ||
| Bill Baldwin | Guest Star | ||
| Diana Crawford | Guest Star | ||
| Len Hendry | Guest Star | ||
| Don Kelly | Guest Star | ||
| Jerry Hopper | Director |