Harry. 100 words. Episode 2x03. Not my characters.
Harry hasn't yet made up his mind whether to trust Ruth. He likes her, perhaps too quickly, and perhaps that is why he is doubly reluctant to let her into the inner circle. Zoe, Danny and Tom have proven themselves many times.
Perhaps it's because she's from GCHQ. Harry tells himself he shouldn't let his personal bias affect the team, but his is a suspicious nature. For now, a little distance is a good thing.
Ironic, then, that the distraction he'd set her leads her to solve the riddle behind this whole mess.
Perhaps she's not the enemy after all.