Revealing mistake: At the end, when Tarrant is beamed out, Servalan's position shifts considerably, even though she's supposedly standing still. (00:43:45)
Blake's 7 (1978)
1 mistake in Sand
Starring: Jan Chappell, Michael Keating, Paul Darrow, Peter Tuddenham
Trivia: The box-like entrances to the underground lair proved problematic for the Space Rat actors. When several of them were supposed to spill out on cue, the box walls and their heavy helmets prevented them from hearing the director, who repeatedly screamed "Action!" to no avail. A lone voice from inside the box eventually shouted back, "Can't hear you!"