A CONFESSION OF WHAT?

She was almost strangled to death by a seemingly regeneration deranged The Doctor in his new incarnation with The Twin Dilemma, and it looks like the sixth incarnation's cruel streak would return, seemingly torturing Peri on the water-blasted rocks of Thoros Beta in this memorable and mildly disturbing moment from Parts Five to Eight of Philip Martin's successful The Trial of a Time Lord section (aka Mindwarp).

Of course, as we all know, the worst was yet to come for Peri...