Episode 311, "Severed Ties"
SEASON 3, EPISODE 303 - In this episode SRU is brought in to diffuse the possible mass killing at a hidden cult. The action kicks off when a woman holds up a convenience store. She is clearly desperate, and they trace her identity to a young woman that went missing fifteen years prior. It turns out she was taken in by this charismatic young cult leader, and now has a son with him. She is desperate to get her son out because she knows her cancer-doomed husband is planning to take everyone out by the end of the day. The team works furiously against the clock to figure a way into the compound without compromising themselves.