Horatio tries to save Yelina; despite Calleigh's protests, Delko gets involved with his dangerous father.

The team investigates when a man is boiled alive; Julia spins out of control; a dark secret is revealed.

A seemingly normal family is targeted in a brutal grenade attack, leaving Horatio and the team to figure out why.

The murder of a reality star throws the CSI team into the scandalous world of a television dating show.

A murder case leads Horatio to discover that Ron Saris is alive and seeking revenge on Julia.

When Ryan is kidnapped, he is forced to betray Horatio and the team.

A home invasion turns into something more when the team discovers that the Russian mob is targeting them.

The team investigates when a flight attendant is murdered.

The CSI team makes a shocking discovery about its murder victim; Horatio tries to save his son from Julia's erratic... Full summary

Pirates take over a yacht; Calleigh and Delko's relationship moves to the next level.