Mary-Pat Green

Phoebe catches chicken pox just as her old flame Ryan arrives in town on leave from the Navy. Even though he hasn't yet had chicken pox, he can't stand to be apart and they both spend the rest of the time trying to not scratch. Joey gets a job at Chandler's office but decides to play it as a role. The character he creates, Joseph, has a wife and kids and ultimately blames Chandler for his own screwup. Monica is upset that Richard doesn't have a "thing": an unexplainable quirk. He eventually comes up with one to ease her mind.

The serial killer, still at large, taunts Castle, Beckett and Shaw to catch him.

Claire is suspected of arson when Kroehner Corp.'s new building is burned to the ground; David ends a feud with Keith.

An actress's death prompts her castmates to pitch in for a funeral; Ruth arranges a dinner for Nate, David and Claire.

When Sonny catches the flu, Chad offers to take care of her responsibilities.

The Monsignor takes an unlikely convert under his wing. Lana secures a new piece of evidence that can exonerate Kit. Dr. Arden witnesses a miraculous return.