Sorry to be so vague but it was a drama where I think it had flashbacks or memory loss but it could have been a bit like the butterfly effect.
It had an actor in it like Stephen Graham but I don't think it was him. A lot of people said it was confusing at the time because it jumped all over
I remember one scene the man was shouting up to a balcony in either an office or school then it went a little crazy.
I think it was after 2015.
What was it called?