I was pleasantly surprised by this dvd having seen the film once years ago on TV. Yes it's a low budget 70s movie which you're only going to watch if you're a fan of Cushing and/or Lee, but compared to some of their other non-Hammer efforts it isn't bad.
The Scottish setting and centrality of children to the plot are reminiscent of The Wicker Man though that's film splendid ending is not matched here. The location shooting is good and adds to the atmosphere, but as so often with these movies the ideas slightly outstretch the budget and execution.
Tha cast is impressive - Michael Gambon ,Fulton Mackay,Keith Barron and Diana Dors.
All in all one for fans of 70s British horror and the two leading stars of the genre.