Clint Culp

Charlie runs into an ex with a child who looks and acts a lot like him. He begins to suspect that he is the child's father.

Jess worries that someone is trying to sabotage her first middle school dance and asks the gang to help chaperone.

Meredith helps Cristina write an acceptance speech and Derek feels overwhelmed by his responsibilities. April and Jackson disagree over children and religion. Callie and Arizona attempt to reconnect.

Alex and Jane's sibling rivalry heats up; Dave dates an attractive woman with an unusual quirk; Penny gets an assistant.

Gibbs and Ducky suspect that an antique war stick seen on television may be a missing murder weapon linked to an unsolved case from 16 years prior.

Will forms an a capella group, and spends more time with them than he does with New Directions after he is asked to preform at the PTA meeting with some surprising additions to his group.