Ross determines to find Mark Daniel who may be able to remember where he saw copper while hiding down Wheal Grace. To do so he must accompany Trencrom's smugglers to the Scilly Isles, which is dangerous as there is an informer amongst them.
| Name | Type | Role | |
|---|---|---|---|
| Winston Graham | Writer | ||
| Jack Russell | Writer | ||
| Paul Annett | Director |