7.6/109 votes#1 - Cockroaches
Season 8 Episode 9 - Aired 12/6/2007
The team investigates an underground mob. Warrick ends up becoming the prime suspect in a murder that's related to the mob, and his addiction to pills starts to have a significant impact on his job as a CSI.
Director: William Friedkin
Writer: Dustin Lee Abraham
7.4/109 votes#2 - Mascara
Season 9 Episode 18 - Aired 4/2/2009
Langston is shocked when his former student is found murdered and becomes the focus of a CSI investigation into the world of Mexican wrestling.
Director: William Friedkin
Writer: Dustin Lee Abraham
7.0/101 votes#3 - Off Season
Season 3 Episode 29 - Aired 5/10/1965
Johnny Kendall is a trigger-happy cop who is fired from the police and is forced to take a job checking vacant summer homes during the off-season. His girlfriend Sandy gets a job as a waitress to try to help them make ends meet. At work, Johnny discovers that the previous deputy was fired from the job for having an affair with an unidentified woman in one of the vacant summer homes. Later, when Johnny sees the ex-deputy hanging around Sandy he becomes jealous and paranoid. One night, when he believes the two are together, he takes his gun and begins to look for them. He heads for the empty summer houses and finds one broken into. Inside he hears the former deputy and a woman. He shoots them both in the dark and kills them. He turns on the lights and discovers that the woman was not Sandy, but the sheriff's wife.
Director: William Friedkin
Writer: Robert Bloch
4.5/104 votes#4 - On a Deadman's Chest
Season 4 Episode 3 - Aired 6/27/1992
A rocker fights with his manager. His groupie girlfriend shows him a special tattoo and convinces him to get one from where she got it. The tattoo has a picture of a dragon but a cartoon face that looks like Scarlett. He tries to remove the tattoo but no matter how hard he tries it keeps coming back. Eventually it drives him to murder Scarlett. The tattoo comes back to haunt him despite his guilt.
Director: William Friedkin
Writer: N/A
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William Friedkin Ratings Summary
"Cockroaches" is the best rated episode directed by William Friedkin. It scored 7.611/10 based on 9 votes. It was written by Dustin Lee Abraham. It aired on 12/6/2007 and is rated 0.2 points higher than their second-best episode, "Mascara".