Jenni Blong

Kate finds herself on the run; Jack must do something that may endanger a friend's life.

Seeking more answers about her past, Sookie enlists Lafayette to summon her dead parents. Meanwhile, Eric and Tara resort to drastic measures when Pam finds herself in dangerous territory. Sarah Newlin reconnects with Jason as Jessica seeks atonement.

While explaining Peter's otherworldly origins to Olivia, Walter flashes back to 1985; Peter's mother is introduced.

Oz arrives in L.A. with a ring from Buffy which must be kept from Spike at all costs – and which would allow Angel to walk in the light of day.

A serial rapist sends a letter to the squad announcing his return to Philadelphia after five years and his plan to strike again.

President Palmer tells Jack that a top CTU agent is to be killed. Meanwhile, at the hotel, Michelle offers a peaceful ending to those infected with the virus.