Review: Gotham (S2 E20/22), Monday 30th May, Channel 5

Previously on Gotham… Theo Galavan, back from the dead and reprogrammed as assassin Azrael, has attacked GCPD, leaving Captain Barnes injured; Oswald Cobblepot has set out for revenge, and Ed Nygma has discovered the secret of Indian Hills, making him more determined to break out of Arkham.