"we find him (Shawn) passed out drunk in the Psych offices, listening to a cheesy doctor vampire audio-book called Internity."

The book involved vampires and shapeshifters from what they explained adn what you heard from the audio book during this episode, i found it rather amusing, couldnt find any pictures of the damn book though and they do show it lol but yeah check out the episode named "shawn 2.0" from usa network if you want to see


Description of the show : A novice sleuth (Roday) is hired by the police after he cons them into thinking he has psychic powers that help solve crimes. With this assistance of his reluctant best friend (Hill) the duo take on a series
of complicated cases.

Sources:

http://www.imdb.com/title/tt0491738/

https://thetwocentscorp.wordpress.com/2010/09/02/psych-recap-review...