Anyway, his workmates are doubtful, y'know, being sane academic types, but slowly start to question their own assumptions as his story seems more and more plausible. There is a twist, of sorts, as the man claims to be a fairly significant figure from history...
Low budget, well acted, intelligent, great script and funny. There's a final moments reveal which seems a little tacked-on, but that's a small niggle in an otherwise excellent film.
10/10 (Yeah, why not.)