Watch The Power (2021) online

The Power is a 2021 British horror film written and directed by Corinna Faith and starring Rose Williams, Emma Rigby, Shakira Rahman, Charlie Carrick and Diveen Henry.
In early 1970s London, a nurse in training spends her first night at the East London Royal Infirmary during power outages caused by a miners' strike. In the near-total darkness of the old hospital, she is haunted by a supernatural presence, and by her own troubled past growing up in an orphanage.