Katie Benedetto

Katie is the teenage babysitter who looks after Paul Spector's children in Belfast, hovering at the edges of his household with a watchfulness that goes beyond the job. Quiet, guarded and fiercely private, she nurses a fixation on Paul that she guards like a secret, testing how far loyalty to him might take her.

Aisling Franciosi plays adolescent longing as something coiled rather than soft, all flat stares and controlled silences that hint at a will far steelier than her age suggests. The writing lets her ambiguity do the work — you're never quite sure how much she understands, which makes her stillness genuinely unsettling to watch.