This is not only a very specific list, this is a cry for help. I've been looking like crazy for shows with this exact premise (dont ask why) and have come empty handed, seriously if you know any that are good and not in this list tell me in the comments
Channel 4 and elsewhere
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TV Series I have watched on Kodi
Movies and/or shows about cops with DID (dissociative identity disorder)
by Cool Cactus