A research scientist accidentally discovers a strange gas that penetrates his gas mask and the effects are most bizarre - now every time he hears a bell it sends him into a murderous rage.
| Name | Type | Role | |
|---|---|---|---|
| Donald S. Sanford | Writer | ||
| Lorrie Richards | Guest Star | ||
| Robert Ellenstein | Guest Star | ||
| Norm Williams | Guest Star | ||
| Russ Conway | Guest Star | ||
| Robert Vaughn | Guest Star | ||
| Marlo Thomas | Guest Star | ||
| Kathleen Crowley | Guest Star | ||
| Helen Brown | Guest Star | ||
| Laslo Benedek | Director |