Observer. And immediately had to seek it out and binge-watch the whole thing.
Gabriel Byrne (fit) plays psychotherapist Dr Paul Weston, and each episode sees him have a session with a different patient. The series runs across five consecutive evenings, so in a week you see sessions with four clients, and in the final episode Dr Weston's session with his own therapist (played brilliantly by Dianne West).
The result is intense performances from brilliantly cast and scripted actors. If you're a psychology nerd like me it is, frankly, porn. Sky Arts are showing it from tonight at 10pm. Perfect winter viewing.