I read this interesting book a while back, and I can't remember either the title, or the author, or even the name of the protagonist.
It starts with us learning that the main character now tends to the garden of a university or college. He is afraid of telephones because whenever he gets near one, it starts ringing, even if it is disconnected, and whoever picks up the phone hears a horrible scream.
I think the protagonist was some kind of a detective or police man or something, and the scream comes from a kid that's posessed by something.
Yes, it's quite scary
