Surprise Ending: Delivered

Cameron Monaghan who has played Ian Gallagher since the start of the series has left the series during the most recent episode, in which his character went to jail for his role in blowing up a van as part of a protest against conversion therapy.

The episode delivered a surprise ending for Ian. In the closing scene of the episode, Ian's former boyfriend Mickey (Noel Fisher) was revealed to be his cellmate at Beckman Correction.

I didn't see this coming, but in retrospective there was no other way for Ian's story to end. It was a perfect finish.