Oh so very boring.
'The Watcher in the Woods' isn't necessarily a terrible film, but wow did I feel completely uninterested from (almost) start-to-finish. Dully told plot with a plain cast list. I couldn't, unfortunately, tell you anything I actually found good about this.
Lynn-Holly Johnson (Jan), a year prior to her appearance in James Bond, is the standout, but that's only down to a process of elimination to be honest; I found the rest yawnful. They aren't helped by the writing which fails to captivate how supposedly heavy the premise is, it's all basically as it seems - obvious. I should've cared for Mrs. Aylwood (Bette Davis) but I simply didn't feel attached one bit.
It is a weird one due to it not, as noted, doing anything massively negative, it's just the fact that the (short) run time is such a chore to get through. Not one I'd recommend.