Kay (short for Katherine) is top of her class in every lesson and two-year-running chief of year 3. She is an ambitious person who loves the academic side of policing but uh, not so much the running around shooting things side, although she’s always up for a bit of heroics when the opportunity presents itself. A deeply anxious person, Kay spends much of her time second-guessing her abilities and slowly being crushed by the weight of her own expectations, oh and some newly emerging insomnia. She can often be socially awkward, and is going through a lot after having just ended her first long-term relationship, confused about her identity, and stuck with a few friendships that need a bit of work. Kay strongly believes in the government and that she is making the world safer, she spends much of the show unlearning this and grappling with the realisation that everything she has based her sense of self around is a lie.