Season 10
19 episodes

1. Countermeasures
44m · Sep 25, 2011
Horatio and Natalia's lives hang in the balance, as Horatio stands between Natalia and certain death. Meanwhile, it's a race against time for the team to capture escaped killer Jack Toller before he kills again.

2. Stiff
44m · Oct 2, 2011
The discovery of a strange murder weapon leads the CSIs into the world of gigolos.

3. Blown Away
44m · Oct 9, 2011
A tornado touches down on a murder scene, damaging the evidence and putting Ryan and Walter in grave danger.

4. Look Who's Taunting
44m · Oct 16, 2011
Horatio and his team are hunting a sadistic psychopath who tortures women - and one of them may still be alive.

5. Killer Regrets
44m · Oct 23, 2011
Mexico's deadliest assassin is a target in Miami. Horatio's only hope is his worst enemy.

6. By the Book
42m · Oct 30, 2011
In a deserted mansion, the CSIs find a body hanging that appears to have been killed by a vampire.

7. Sinner Takes All
44m · Nov 6, 2011
A high stakes poker game is disrupted by a masked assassin, leaving one player dead and the CSIs baffled.

8. Dead Ringer
43m · Nov 13, 2011
When Horatio finds another corpse with missing eyes, everything points to his nemesis, “The Taunter” – except he has an airtight alibi.

9. A Few Dead Men
44m · Nov 20, 2011
The CSIs investigate when three convicted murderers are released from prison and someone starts killing them one by one.

10. Long Gone
42m · Dec 4, 2011
Horatio is determined to find a family that completely disappeared.

11. Crowned
44m · Dec 11, 2011
The CSIs expose the seedy underbelly of children’s beauty pageants when a contestant's mom is murdered.

12. Friendly Fire
44m · Jan 8, 2012
An eccentric genius is assassinated with the most unique weapon the CSIs have ever seen.

13. Terminal Velocity
45m · Jan 29, 2012
When a skydiver is murdered, the CSIs discover that he has more than 100 children and all of them are suspects.

14. Last Straw
45m · Feb 19, 2012
When the sisters of a Miami sorority are knocked off one by one, the CSIs try to end the murder spree.

15. No Good Deed
44m · Mar 4, 2012
When a neighborhood do-gooder is murdered, Horatio and the CSIs discover that he was planning to blow the whistle on something big.

16. Rest in Pieces
44m · Mar 11, 2012
When the Miami Taunter strikes again, Horatio meets with the matriarch of the suspected killer's family.

17. At Risk
45m · Mar 18, 2012
When a beloved tennis coach is nearly killed, Calleigh discovers a personal connection to the case.

18. Law & Disorder
42m · Mar 25, 2012
A corruption scandal is uncovered by the CSI team which forces Horatio to face an old adversary. Malcolm McDowell returns as Darren Vogel.

19. Habeas Corpse
44m · Apr 8, 2012
Every member of CSI is a suspect when one of the team's enemies is murdered. When the investigation becomes deadly, Samantha Owens ends up having to be rescued.