Michael Cotter

A self-storage unit is revealed to contain the grisly early makings of a serial killer, and the team race to examine the contents and profile the individual responsible.

Barney's playboy brother arrives as Barney is struggling with the realisation that all his friends have settled into relationships.

Ted reveals that he is still technically married to Jordan, and JD's new position as co-chief resident goes to his head.

The interns approach the end of their first year as interns, becoming full-fledged doctors. By helping an elderly man without health insurance, JD and Elliot draw the ire of Dr Kelso.

Elliot and J.D. search for a former patient, and realise their relationship has changed. Dr Cox is concerned about the implications of his new title, and Carla has an important question for Turk.

Turk asks JD to show Carla that he is a trustworthy guy, but it backfires when they share a kiss. Elliot and Dr Kelso become emotionally involved in a delicate patient situation. Dr Cox attempts to be a cool dad.