The House Sitter: A chilling, addictive psychological thriller from Keri Beevis

After her relationship ends, the narrator agrees to house-sit her brother Dexter's apartment while he travels abroad. One summer evening during a power cut, sitting on the balcony, she observes the residents in the opposite building and witnesses a man in the penthouse with a striking woman. The following weekend, a woman matching that description is reported missing and has not been seen since that night. When the narrator contacts the police, the man in the penthouse provides a cast-iron alibi and claims the woman was never there. Convinced of what she witnessed, the narrator begins investigating further, but the situation becomes increasingly dangerous. She realizes someone is watching her, and she must question how much she can trust her neighbors.