Tuck Milligan

Dr. Greene finds out his mother has serious medical problems.

When Carter finally comes face-to-face with Reese, he urges her to join forces to help with their latest POI, a scrappy young woman from the wrong side of the tracks who turned her life around and became a lawyer.

A deadly new life form invades the bodies of a volcanic research team.

Flashbacks to Finch's adolescence provide insight into his creation of The Machine.

Sameen, Harold, and Arthur make their escape. Root is captured and tortured.

Partners In Crime. After learning that an untouchable crime boss may have been behind her former partner's death, Bell enlists the task force to take him down. Stabler is recruited for a secret mission of his own.