S5, E8: 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.