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Watch CSI Season 13 full episodes online, free and paid options via our partners and affiliates.

Their Darkest Case
Watch CSI Season 13 Episode 20
"Skin in the Game"
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On the 13th season finale of CSI, the team investigates a series of murders resembling the sins in "Dante's Inferno"

Who You Gonna Call?
Watch CSI Season 13 Episode 19
"Ghosts of the Past"
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When a professional ghost hunter is killed, the team investigates on CSI.

The Body in the Mud
Watch CSI Season 13 Episode 18
"Fearless"
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The team investigate when a body is found in a mud bath a popular spiritual retreat while Hodges has concerns about his upcoming marriage on CSI.

The Youngest Witness
Watch CSI Season 13 Episode 17
"Backfire"
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When a six year old girl is the only witness to multiple homicides, Russell must find a way to get her to come out of her shell on CSI.

Uncovering a Serial Killer
Watch CSI Season 13 Episode 16
"Sheltered"
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When a body is found in the forest, the team may have uncovered a serial killer's burial ground on CSI.

A Prom Queen's Death
Watch CSI Season 13 Episode 15
"Dead of the Class"
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The prom queen at David Phillips high school reunion is murdered on CSI.

Sara's a Suspect
Watch CSI Season 13 Episode 14
"Forget Me Not"
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Due to a brief interaction with the victim, Sara becomes a suspect in a murder investigation on CSI.

Peter Plays Poker
Watch CSI Season 13 Episode 14
"Last Woman Standing"
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When poker players end up dead, the team investigates the game. David Cassidy guest stars on CSI.

Greg & Morgan Find Evidence
Watch CSI Season 13 Episode 13
"Exile"
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The team investigates the death of a famous Cuban singer's sister and will Hodges get cold feet when it comes time to marry his Italian fiance on CSI?

Mac Taylor Needs Help
Watch CSI Season 13 Episode 12
"In Vino Veritas"
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Gary Sinise guest stars when Mac Taylor asks D.B. Russell to help him find his missing girlfriend on this week's CSI.

The Ball Machine
Watch CSI Season 13 Episode 11
"Double Fault"
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The team finds out that Hodges is engaged while investigating a the case of a tennis star on this week's CSI.

Sara's Old Flame
Watch CSI Season 13 Episode 10
"Risky Business Class"
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On CSI, the investigates a small plane crash outside of Las Vegas. Sara begins to feel the strain of her long distance relationship with Grissom.

Morgan Becomes Suspicious
Watch CSI Season 13 Episode 10
"Dead Air"
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On CSI, the team investigates when a local news anchor is killed during a live broadcast.

Brass' Reality
Watch CSI Season 13 Episode 9
"Strip Maul"
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Jim Brass finds out something surprising about his daughter while the CSI works with local law enforcement on CSI.

Finlay's Bad News
Watch CSI Season 13 Episode 8
"CSI on Fire"
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On CSI, when eight bodies are found near a meteor site in the desert, Finlay realizes she knows one of the victims.

Arriving At a Grave Site
Watch CSI Season 13 Episode 7
"Fallen Angels"
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On CSI, a reverend's body is found at late CSI team member Warrick Brown's grave site.

Questioning Linda Burns
Watch CSI Season 13 Episode 6
"Pick and Roll"
Original Air Date:

On CSI, things get personal when D.B. Russell is drawn into the investigation of the death of his son's basketball coach

Nick Invetigates a Police Dog
Watch CSI Season 13 Episode 5
"Play Dead"
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The team tries to determine if a police dog cause an officer's death and finds out there may be more to the story on CSI.

Saunder's Personal Connection
Watch CSI Season 13 Episode 4
"It Was a Very Good Year"
Original Air Date:

On CSI, Saunders has difficulty dealing with a murdered musician historian because of his connection to the victim.

A Deadly Rave in The Desert
Watch CSI Season 13 Episode 3
"Wild Flowers"
Original Air Date:

On CSI, the team investigates when a 14 year old girl dies at a rave in the desert.

The Diner Murders
Watch CSI Season 13 Episode 2
"Code Blue Plate Special"
Original Air Date:

On CSI, when their are eight deaths at their favorite diner, the team is called in to investigate the cause.

How Far Will Russell Go?
Watch CSI Season 13 Episode 1
"Karma to Burn"
Original Air Date:

On the 13th season premiere of CSI, Russell must beat the clock as he searches for his missing granddaughter

CSI Season 13 Quotes

Finn: Thanks for saving my life.
Moreno: You knew I would.

McKeen: Is DB on board with this, cause I think he's going to want to talk to me.
Brass: [slams him against the wall] If anything happens to that little girl, I've got people too.

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