If this was discussed, it's probably been years. I'm just now watching DCI Banks (BBC) on Hulu. In season 2, they introduce DI Helen Morton. I find it ironic that she's played by Caroline Catz, who played opposite Martin Clunes in Doc Martin.
DI Morton calls everyone by their titles, and has her own orderly way of working, and makes a number of faux pas to which I can relate. They led into it slowly, but I think gave it away when she starts taking notes during a discussion with Banks about fitting in at the squad: make jokes, go to pub, etc. I let that kind of thing slide, given that some writers want to make sure that everyone gets it.
Caroline Catz really does justice to the role she has, in my opinion. I can see some similarities to Clunes's portrayal, but no more than I'd find in many pairs of autistic people. DI Morton seems willing to make an effort on behalf of other people and their puzzling motivations, while Doc Martin dismisses as ridiculous the very idea of interacting with people beyond their physical health.
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"I find that the best way [to increase self-confidence] is to lie to yourself about who you are, what you've done, and where you're going." - Richard Ayoade