What a superbly intricate piece of comedic cinema this is. Keaton is a down-at-heel cinema projectionist who fancies himself as a budding "Sherlock Holmes". When a love-rival manages to frame him for pinching his (rather fickle) girlfriend's father's watch his life seems to have lost all purpose... Only when he returns to his cinema and runs that evening's movie does he doze off and dream his way into the film -…