9. The Secret Quarry (1996)
The kids find a tunnel leading from an abandoned quarry to Westbourne Hall. Norman and Dennis are caught by Grainger, but are saved by Luigi, who Grainger has arrested shortly afterwards for stealing from the Hall.
Release date: 1996-03-18
Season number: 1
Episode number: 9
Runtime: 20 minutes
Rest of the cast - click here to expand
Josie McCabe - Mary Parker, Sophie Ward - Polly Hobbs, Raymond Pickard - Norman Starkey