Lockhart is on the trail of a couple of vagrants who have got their hands on some 'weeping' gelignite.
| Name | Type | Role | |
|---|---|---|---|
| Doel Luscombe | Guest Star | ||
| Peggy Paige | Guest Star | ||
| Reg Lye | Guest Star | ||
| Ewan Roberts | Guest Star | ||
| Arthur Skinner | Guest Star | ||
| Danny Green | Guest Star | ||
| Patrick Connor | Guest Star | ||
| Duncan Lewis | Guest Star | ||
| Harry Fowler | Guest Star |