"Unknown Caller" is a 2020 thriller film directed by Matthew Parkhill. The story revolves around a woman who receives a series of mysterious phone calls from an unknown number. As the calls escalate in intensity, she finds herself trapped in a dangerous game that tests her sanity and survival. The film explores themes of isolation and fear, highlighting how technology can invade personal space. With a focus on suspense, "Unknown Caller" keeps viewers on edge as the protagonist uncovers the truth behind the calls and the identity of the caller, leading to a shocking climax.