Henry, the son of one of Verela's clients, is a boy genius and when he buys an obscure book that has stolen top secret flight plans concealed within the thieves want the book and follow Henry on his way to Switzerland escorted by Miss Carter and Bill Randall who is employed by the boys' father.
| Name | Type | Role | |
|---|---|---|---|
| Lindsay Hardy | Writer | ||
| John Paddy Carstairs | Director |