The Sentinel

This book was so good. The first scary book I've read in years, although more suspenseful than anything. I'd categorize it to The Sixth Sense type of horror.
The story is about Allison, who has dealt with attempted suicides in the past due to abuse from her father and some personal choices she's made. She moves into an apartment and becomes friends with an old man named Mr. Chazen who's best friends are a parakeet and a cat. She's also neighbors with an old blind priest who seems to never come out of his apartment. As the story commences, ominous things happen to Allison and people aren't who they seem. Her boyfriend Michael try's to help her uncover the mysteries of what's going on while a detective Gatz is uncovering clues of Michael's past to show that he may not be the good guy he seems to be. What will become of Allison's eternal fate?