Blackmail has its twists and turns.
| Name | Type | Role | |
|---|---|---|---|
| Arthur Weiss | Writer | ||
| Andrew Duggan | Guest Star | ||
| Michael Masters | Guest Star | ||
| Coleen Gray | Guest Star | ||
| Kathie Browne | Guest Star | ||
| Lenore Kasdorf | Guest Star | ||
| Tom Drake | Guest Star | ||
| Harry Harvey | Guest Star | ||
| Roy Jenson | Guest Star | ||
| Ed Lauter | Guest Star | ||
| Harry Harvey Jr. | Director |