When the wreckers start operating in his local community, it falls to "Squire Trevenyan" (Peter Cushing) to try to stop this ruthless and brutal crime. Thing is, though, when his son "Christopher" (John Fraser) returns home one night with details of who is doing what to whom, his father is suddenly nervous, compromised - but why? Is it just because the lad has a crush on "Louise" (Michèle Mercier) or because he is afraid of her brute of a father "Black John" (Bernard Lee). Anyway, time to send for the Redcoats! It's a standard adventure film this with little jeopardy or anything new as it sails... lees de rest.