Artie O'Daly

Leonard and Sheldon's flat is burgled. Determined to outwit any thieves, the gang work on creating a state-of-the-art security system to protect the apartment.

The property that Jay and Phil have invested in could be a bust. Cam ends up in the hospital after a head injury.

Cristina and Burke's wedding day arrives; the interns get their exam results; Callie and George make a decision about their relationship.

The members of the team go undercover on a movie set in Kazakhstan, hoping to disable a Soviet-era nuclear missile being sold by terrorists.

JD deals with losing his apartment and his girlfriend while suffering from a condition that results in fainting or blackouts. Elliot and Turk debate who will take care of a resident, while a Croatian doctor arrives at the hospital.

The Sacred Heart staff dredge up some of their own memories while helping a patient regain his memory. They reflect on the past six years and consider all the changes that have occurred.