Surgeon Gabriel Weston uncovers extraordinary cases that are bringing new discoveries about the human body. This week, we meet a girl whose heart has formed outside her ribcage.

Gabriel Weston uncovers extraordinary cases that are bringing new discoveries about the human body. In this episode, we meet a man who injects himself with deadly snake venom.

Gabriel Weston explores extraordinary cases that are helping uncover the mysteries of the human body, including a man who feels no pain and a woman who can smell Parkinson's.

Gabriel Weston uncovers extraordinary cases that are revealing new discoveries about the human body, including a girl with two hearts and a man who can sing two notes at once.

Gabriel Weston uncovers extraordinary cases that are disclosing new discoveries about the human body, including a man with bones as strong as granite.