Knitting and crocheting books are selling like crazy at the bookstore where Molly works, so to keep the customers coming, she sets up a series of classes where the Tarzana Hookers can pass on their skills to others: a Yarn University. The only problem is the teacher of the most popular seminar—Sheila—is getting a massive case of stage fright about being in front of a crowd. To ease Sheila's nerves, the Hookers plan a practice class at crocheter CeeCee's mansion. But before the lesson begins, Molly and the gang stumble upon a dead body in the apartment above CeeCee's garage. Now, Molly must unravel the clues to find a killer quickly—or school might be out forever...