Stumbled across this when looking for an off the beaten track horror fix and this delivered. Apparently 4 episodes were lost so I've only seen the first 3, but that kind of added to the mystery of this show. The first episode 'Exorcism' was the most effective and I loved how low key the whole cast played it. Obviously it had its flaws, the 2nd and 3rd episodes were excessively bleak for me but I haven't seen much easily comparable for a slice off British 70s horror.