Bret Lada

A woman is sexually assaulted by a masked man, but she believes the rapist is the same man who went to jail for stalking her. Meanwhile, Tucker (Robert John Burke) contemplates retirement and a future with Benson (Mariska Hargitay).

When The Machine spits out the number of a six-month-old baby, Reese and Finch turn into "overly protective parents" -- with an arsenal at their disposal. Meanwhile, Carter begins to question her new allegiance to Reese and Finch when Elias resurfaces.

After a member of the President's staff is murdered, Ellen urges Duncan to back out of the assassination plot, while other members of the President's staff take matters into their own hands. Meanwhile, after scouring medical records, Ellen finds someone who might be a viable bone marrow donor for Duncan's wife, Nina.