The Highlanders

Arriving in Scotland in the aftermath of the Battle of Culloden, the Doctor and his companions are taken prisoner by a group of Scottish rebels. Offering medical help to the clan's injured Laird, the Doctor is able to win over their captors.

Their respite is short-lived, though. While Polly and the Laird's daughter, Kirsty, go to fetch water, the others are captured by a Redcoat troop under the command of Lieutenant Ffinch. Ffinch leaves his prisoners in the custody of Grey, a crooked solicitor who plans to sell them into slavery in the West Indies.

To win his friends' freedom, the Doctor must stretch his powers of disguise to their limits...