Police are baffled when jewel thieves kill a night watchman and steal a plastic replica of a diamond. The gang's using it so that their diamond cutter can practice to be ready when they steal the real thing.
| Name | Type | Role | |
|---|---|---|---|
| Howard Rodman | Writer | ||
| James Tolkan | Guest Star | ||
| Luther Adler | Guest Star | ||
| Elizabeth Allen | Guest Star | ||
| Michael Conrad | Guest Star | ||
| Walter Matthau | Guest Star | ||
| Buzz Kulik | Director |