Martyrs' Hall is a distinguished Cambridge college. The Master, Sir lain Carfax, has recently left the Cabinet and now enjoys life at his old college with his daughter Diana. The dignified serenity is, however, a cover for the United Kingdom's most important spy cell, 'Codename: Portcullis.' This play concerns the enlistment of a new co-spy and the prevention of a dangerous formula in the germ-warfare arsenal from leaving the country.
| Name | Type | Role | |
|---|---|---|---|
| Bill Hays | Writer | ||
| Peter Jeffrey | Guest Star | ||
| John Turner | Guest Star | ||
| Jennifer Daniel | Guest Star | ||
| James Grout | Guest Star | ||
| Clifford Evans | Guest Star | ||
| John White | Guest Star | ||
| Bill Hays | Director |