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Played by: Skip O'Brien

• Talk about S.J O'Riley
• Photos of Skip|Ray O'Riley

History:
Raymond O'Riley is head Sargent of the Las Vegas Police department.

In the series Pilot , O'Riley assisted Grissom and Brass in attempting to catch the "Bathtub Killer". he was more than puzzled when Grissom quickly denounced Paul Millander as a suspect. In the long run, he'd end up being right as Milander was in fact the killer.

In Boom, O'Riley interrogated the man who Nick saw beating on his then recently deceased prostitute girlfriend. The guy pinned the rep on Nick, butter was later found to be the true murder. O'RIley took the man into custody soon after and attempted to split an attempted argument between Nick and the assailant. Cathreine called O'Riley off to let Nick deal with this his own way.

In To Halve and to Hold, O'Riley assists Warrick and Sara in an investigation on the death of a male prostitute at a bachelor party. He helped apprehend three suspects at a cheap wedding chapel, but quickly left the interrogation room due to the topic of conversation: Vaginal Sex.

In Felonius Monk, O'Riley assisted the team in uncovering the mystery behind the deaths of four monks. O'Riley questioned the Chef and Ananda while the others processed the scene. He did various research into the background of Anand and found only a part of the Monk's revenue was sent to the charities. After their prime suspect was cleared, O'Riley interrogated the Chef, who killed the monks in an attempt to hide his shame that he attempted to steal the rest of the money not sent to the charities.

Defining Cases (or Episodes):

• Pilot
• Felonious Monk
• Homebodies

Trivia:
Since Skip O'Brien's departure from the series, he's lost over 135 pounds.

Quotes:

"Here comes the nerd squad"

"You wanna barf bag?"

Grissom: "What's wrong with your two guys?"
O'Reilly: "They've been inside."

"This is the only room with no blood in it. There's nothing to disturb"

"You guys got SOME toys"

"Sorry Elvis, your wedding party had to leave the building"

"Mr. Winston, do you know how to use a blowtorch?"

Sara: "This is the Vagina. And it does tell a monologue, some bruising is normal when sex occurs. Injuries at 11, 12, or 1 O'clock indicate consensual sex or what we would call avid. Injuries at the dinner hour at 5, 6, or 7 indicate forced entry. the woman has done nothing to help her partner, therefore sustaining serious bruising."
O'Riley: "Sidle, I'm gonna be, uh, just outside the door....."

"One minute, your watching wheel of fortune, next minute ... game over"

O'Riley: "Catherine, it's a building."
Catherine: "O'Riley, it's a suspect."

Catherine: "How does a gun end up across town in the hands of a five year old boy? "
O'Riley: "Drive and Dump." (O'Riley's last words on the show)