The Locomotion Interruption: [s8e1]

Howard is increasingly disturbed that Stuart is still living with his mother, Mrs. Wolowitz, even after she has recovered from her injury.

He explains that he was robbed in a sleeper car while he slept, losing all his possessions. [S8E1] The Locomotion Interruption

After 45 days of riding trains, Sheldon ends up at a railway station in Kingman, Arizona , wearing only his underwear, one sock, and no shoes. Howard is increasingly disturbed that Stuart is still