Elementary didn't merely feature the return of Mycroft on Thursday.
It revealed some rather shocking information about Sherlock's brother: he slept with Joan!
Of course, Sherlock has slept with Mycroft's former fiancee, who also showed up on the scene, so the awkwardness and tension was ratcheted up to the entertaining extreme on Elementary Season 2 Episode 7.
Did you catch the hour? Click on the following brotherly photo if not and check out the full installment now: