The Star Boarder

Favoured lodger Charlie is getting on rather too well with his landlady, while being secretly photographed by her son in a series of innocent but apparently incriminating positions. Later the boy offends everybody by showing the photos on his magic lantern, together with one of the landlady's husband flirting with another woman. The boy is roundly spanked by his mother while Charlie fights off the knife-wielding husband. (official distributor synopsis)