Watch CSI Season 13 Online
Watch CSI Season 13 full episodes online, free and paid options via our partners and affiliates.
![Their Darkest Case](https://tv-fanatic-res.cloudinary.com/iu/s--VNm8ax_4--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371242190/their-darkest-case.png)
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?](https://tv-fanatic-res.cloudinary.com/iu/s--6aOXfFoy--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371242058/who-you-gonna-call.png)
When a professional ghost hunter is killed, the team investigates on CSI.
![The Body in the Mud](https://tv-fanatic-res.cloudinary.com/iu/s--VMOt7Lfs--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371241864/the-body-in-the-mud.png)
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](https://tv-fanatic-res.cloudinary.com/iu/s--OKLmuL6j--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371241403/the-youngest-witness.png)
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](https://tv-fanatic-res.cloudinary.com/iu/s--YoBmMEOb--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371241247/uncovering-a-serial-killer.png)
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](https://tv-fanatic-res.cloudinary.com/iu/s--nKe3_hqD--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371240970/a-prom-queens-death.png)
The prom queen at David Phillips high school reunion is murdered on CSI.
![Sara's a Suspect](https://tv-fanatic-res.cloudinary.com/iu/s---5YDPAkQ--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371239973/saras-a-suspect.png)
Due to a brief interaction with the victim, Sara becomes a suspect in a murder investigation on CSI.
![Peter Plays Poker](https://tv-fanatic-res.cloudinary.com/iu/s--b3OJARSq--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371240250/peter-plays-poker.png)
When poker players end up dead, the team investigates the game. David Cassidy guest stars on CSI.
![Greg & Morgan Find Evidence](https://tv-fanatic-res.cloudinary.com/iu/s--bW1gehEm--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371239975/greg-and-morgan-find-evidence.png)
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](https://tv-fanatic-res.cloudinary.com/iu/s--X9Mm5Ty---/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371239360/mac-taylor-needs-help.png)
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](https://tv-fanatic-res.cloudinary.com/iu/s--jCs9vthE--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371239237/the-ball-machine.png)
The team finds out that Hodges is engaged while investigating a the case of a tennis star on this week's CSI.
![Morgan Becomes Suspicious](https://tv-fanatic-res.cloudinary.com/iu/s--Bw83x4nL--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371239235/morgan-becomes-suspicious.png)
On CSI, the team investigates when a local news anchor is killed during a live broadcast.
![Sara's Old Flame](https://tv-fanatic-res.cloudinary.com/iu/s--pbBfYWMS--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371238359/saras-old-flame.png)
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.
![Brass' Reality](https://tv-fanatic-res.cloudinary.com/iu/s--ka7Xv6Re--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371237933/brass-reality.png)
Jim Brass finds out something surprising about his daughter while the CSI works with local law enforcement on CSI.
![Finlay's Bad News](https://tv-fanatic-res.cloudinary.com/iu/s--JeyA0dSY--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371237931/finlays-bad-news.png)
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](https://tv-fanatic-res.cloudinary.com/iu/s--q09w0sjw--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371237560/arriving-at-a-grave-site.png)
On CSI, a reverend's body is found at late CSI team member Warrick Brown's grave site.
![Questioning Linda Burns](https://tv-fanatic-res.cloudinary.com/iu/s--Ef-dqcN0--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371237612/questioning-linda-burns.png)
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](https://tv-fanatic-res.cloudinary.com/iu/s--iLNXDpzJ--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371237282/nick-invetigates-a-police-dog.png)
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](https://tv-fanatic-res.cloudinary.com/iu/s---d9E5pBl--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371237058/saunders-personal-connection.png)
On CSI, Saunders has difficulty dealing with a murdered musician historian because of his connection to the victim.
![A Deadly Rave in The Desert](https://tv-fanatic-res.cloudinary.com/iu/s--f6Mis7WV--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371236555/a-deadly-rave-in-the-desert.png)
On CSI, the team investigates when a 14 year old girl dies at a rave in the desert.
![The Diner Murders](https://tv-fanatic-res.cloudinary.com/iu/s--w6M_XQjV--/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371236340/the-diner-murders.png)
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?](https://tv-fanatic-res.cloudinary.com/iu/s--LesukA----/t_small_l/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1371235721/how-far-will-russell-go.png)
On the 13th season premiere of CSI, Russell must beat the clock as he searches for his missing granddaughter