the number 23 the last film--

Walter Sparrow is a family-man married with Agatha Sparrow, and he works catching dogs in the Department of Animal Control, and he has a teenager son very close to his wife and him. On the day of his birthday, he is bitten by a dog and comes late to meet Agatha. While waiting for him, Agatha buys a detective book with a novel about the mystery around the number 23, in a bookstore as a gift to Walther. He becomes interested with the story and obsessed with the number 23, finding many coincidences with his own life, and he decides to find the author, thinking than the story is about him. His hard investigation makes only one thing, than Walther becomes paranoid.