Visible crew/equipment: When the gang are getting into Albert's car to go home, you can see the crew and camera lights reflected in the car door.
Here Come the Double Deckers (1970)
1 visible crew/equipment mistake in Happy Haunting - chronological order
Starring: Peter Firth, Brinsley Forde, Gillian Bailey, Michael Audreson
Continuity mistake: The registration number of the police motorbike changes between scenes from 310KOU to 532KPL.