A professor who befriends Mary and initially suspects her abusive ex-husband is responsible for the supernatural anomalies. Mary later discovers he disappeared in 1979, and his remains are found hidden behind a brick wall in the apartment.
John becomes Mary's human ally while she investigates the supernatural disturbances.
Mary forms a friendship with John Guidi, a professor who becomes involved in the strange events.
Explore the full interactive character relationship map of The Caller