Larry Clarke

Meredith's fears that she is in for a bad day are realized when a medical case arrives at Seattle Grace that threatens the lives of everyone in the O.R.

In Providence, a serial killer apparently murdered three people at random. The perpetrator has no specific victim type, but always strikes in crowded places and uses a knife as a murder weapon.

Jack is on his way to the radio tower with some of the survivors to contact Naomi's salvage ship, but Ben warns them that it could kill everyone on the island. He threatens to execute Sayid, Jin and Bernard.

Jack and the castaways begin their efforts to make contact with Naomi's rescue ship.

Earl has finally got his like on track with a new job, apartment and love interest, but his shocking testimony during Joy's trial may bring it crashing all down.

Castle investigates when a juror on the murder trial of a famous socialite dies in the courtroom.