When the death of a well-known TV star, Annabelle (Katey Sagal), is reported, the CSI team is sent to investigate.
Warrick points out to Grissom and Catherine that a woman's high heel print can clearly be seen in the blood from Annabelle's room.
Catherine finds out that a writer visited Annabelle's room and had the same water bottle on him that she found at the scene of the crime.
The corpse of Annabelle tests positive for blood thinners, and the team realizes that she had been poisoned for quite some time prior to her death.
Grissom and Brass figure out that the only other person, besides Bud, who knew about Annabelle hiding her alcohol in mouthwash bottles was Megan.
In it, she reveals that she had had help from an Italian uncle, "Giuseppe," who taught her how to sabotage Annabelle's car in exchange for what she called "unsavory favors."