May have spoilers, I'm not sure :PI enjoyed reading this book. But I felt that trying to tackle the subjects of addiction and rehabilitation and imaginary friends or whatever made it fail. I say this because there wasn't enough of each subject: it is a book about a man recovering from his addition to heroin, however he does remarkably well (with only one moment of real temptation); and it is a book about a imaginary friend coming to life, but Denny is almost invisible (ha-ha pun intended) in the book (who is he besides a blankie for Chris and in love with Chris?) , and their relationship goes from non-existent to coupl-y in one scene. And there were so many amazing topics that could have been explored in the imaginary friend plot.. That was actually the reason I read the book, so I was a bit disappointed.