You Knock on Annie's door that houses the following supernaturals:

Annie Sawyer (Lenora Crichlow): A ghost who died in the house and is unable to move on. Her storyline in the first season focuses on her confusion about the circumstances of her death and her growing attachment to her new housemates.

Mitchell (Aidan Turner): A vampire burdened by guilt over his past as a blood-drinker and the horrors of his recruitment during World War I. He tries to be a force for good and control his predatory instincts.

George Sands (Russell Tovey): A werewolf who is terrified of his transformations and his monstrous nature. He struggles with his relationships and tries to find a balance between his two lives.

All three open the door and blink at you. Annie speaks up first. "Sorry can we help you?"