With pressure in the money train case mounting, the Strike Team must break into Aceveda's safe to get a look at the evidence against them. Just as Vic is hatching a plan to exchange the safe with a double, he's dragged into an old missing persons investigation when Irma Maldonado produces the recording of a song by Otilio Ramirez that claims her fifteen-year-old daughter was killed by her boyfriend. And while Lauren Riley's K-9 unit fails to uncover Reina's body, it does produce the corpses of eight women who died while working at an illicit drug lab.