Mark Pellegrino

Cristina, back from her honeymoon trip, searches in vain for Burke; Meredith, Cristina, Izzie and Alex spend their first day as residents with their own groups of interns.

Dexter Morgan has a problem, several in fact: his victims are escaping, Doakes is suspicious and constantly tailing him and, on top of all that, he cannot seem to kill anyone. It's not that Dexter doesn't want to, he does. He needs to.

Responding to a fire at a prison, Bobby and the 118 find themselves trapped in a deadly riot.

The police identify the Ice Truck Killer, however Dexter feels there is something wrong with the suspect. Dexter must also deal with Paul, Rita's recently paroled husband.

Dexter notices that a spate of suicides all have one thing in common: the victims were all patients of the same psychiatrist.