Sure, none of us have finished Bandersnatch yet, because none of us ever will. We're just going to have to live with that. One thing we'll all have noticed is that the themes of mental illness, therapy and medication are central to every path that Stefan Butler (Fionn Whitehead) takes through the game-film. I speak to Dr Bishakha Chowdhury about how his fragile state compounds our feelings of guilt when choosing futures for Stefan that will only torture him further.