The Innocent (2017)

Michael is a man dealing with a deep seeded case of psychological trauma which is the root to his chronic insomnia. He can't rest even though he wants to more than anything else. Amid all this, there is a child killer on the loose in the streets of London. As a veteran detective, he has been brought out of retirement to stop this predator once and for all. He has to juggle his personal struggles with his family, his mental health and stopping a very dangerous man, all before it is too late.