At the start of season 6, the rest of the team notices how Sheldon appears distracted and insisting on working overtime a lot. In episode 606 "It Happened to Me," he's staying on the couch of a friend's apartment when the man is arrested for embezzlement. Sheldon claims he was just crashing for the night but Flack and Mac don't believe him. Chasing a suspect in the killing of a man who stole from his company, Sheldon talks the suicidal man down by revealing the truth: He has lost all his savings in a fraud scheme and was forced to sell his house. He confesses he was ashamed to tell anyone and Stella informs him he can count on friends for help. Proving her words, Mac lets Sheldon stay at his guest room until he gets back on his feet. On a later episode, Hawkes has revealed that he is moving to a new residence, while Mac joked about getting his sofa/couch back.