The first sign that Olivia's Gaba lesson would be anything but ordinary came when her student insisted during the warmup that he didn't like wearing clothes.

The middle-aged gentleman had previously studied English with Olivia while wearing the shortest of shorts. On this winter day in February 2012, he wore track pants.

During the lesson, Olivia could hear the client's hand brushing against his pants. But since he constantly scratched himself due to a skin condition, she thought little of it.