Marcus Coloma

A normal day becomes deadly when a despondent student brings a gun to Tree Hill High. While lives hang in the balance, Nathan and Lucas put themselves at risk to protect their friends and loved ones.

On the night before Nathan and Haley's wedding, Brooke argues with Haley over the wedding dress. Meanwhile, Lucas and Karen return to Tree Hill, and Peyton makes a startling discovery.

Jane gets the CBI involved in a case in Napa in order to focus on Sheriff McAllister, while Van Pelt and Rigsby finally take a trip down the aisle and get married.

A legendary comic from the good old days of Las Vegas is set to reunite with his partner on stage for one night only, until one half of the famous duo is found dead. (TV-14)

After one woman is found murdered and another kidnapped, evidence leads the CSIs to uncover dozens of photos of unidentified missing women in a safe. After examining DNA, the team discovers that the kidnapping victim is Boa Vista's sister, Anya. Now, as they try to locate Anya and the other women, Horatio and the others must find a killer who has been posing as a photographer before he strikes again. The episode is inspired by the real-life crime story involving series star Eva La Rue's sister, Nika La Rue, who guest stars. (TV-14)