Plot hole: The very last scene shows Mary building a wall, apparently in her belfry. But there should still be the original wall that Rose built, with the hole in it that Mary smashed in. By killing Rose / having killed Rose, she prevents further harm, but all effects that took place before that (also the building of the wall), should stay (like her scars). It is very unlikely Mary broke down the whole wall just to add another body. (01:28:25)
The Caller (2011)
Plot summary
Directed by: Matthew Parkhill
Starring: Stephen Moyer, Rachelle Lefevre, Ed Quinn, Lorna Raver
When troubled divorcee Mary Kee sets up home in her new apartment, she stumbles across an old telephone which she quickly falls in love with. Struck by its antique charm, she gives it a place of pride in her home. Before long, Mary begins to receive strange phone calls from a mysterious, unknown caller. Over time, she discovers that the caller is a woman named Rose, and the two strike up an unlikely friendship. However, when Rose claims to be calling from the past, Mary begins to question her new friend's motives.
As Rose's phone calls become ever more disturbing, Mary's sense of terror escalates. Feeling haunted in her own home, she cuts all contact with Rose. Enraged by Mary's betrayal, Rose threatens to exact her terrible revenge. Not on Mary in the present but on Mary as a child in the past. Mary finally realizes that she will have to kill Rose in order to save herself. But how can she kill someone living in the past?
More mistakes in The Caller
Question: Did Rose kill anyone other than George, John and her boyfriend?
Answer: No.
Answer: That we know of. It sounds like her boyfriend probably left her because she had mental issues. And when Mary said to get rid of him, that was the tipping point for her to go full-on serial killer. Just my theory.