I thought the televisual presentation of the death scene was a bit limp.
The producers wouldn't have foreseen or prepped for the advisors' amusingly bizarre decision to turn out the light. But couldn't they have got Gibbet to improvise a line or two in the dark, to the effect he was still going to kill the dungeoneer anyway, with a snippet of threatening music, before cutting to the "life force zero" sequence and bongs?