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

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.

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

Jimmy tries to get Hope into a high-end daycare, but an unexpected obstacle is in his way. His father is a registered sex offender, because his mum and dad were caught having sex under the age of consent.