1. Episode 1

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.

3. Episode 3

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.

4. Episode 4

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.

5. Episode 5

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

6. Episode 6

Gabriel Weston unlocks the secrets of the human body, meeting an engineer who fixed his own heart and a toddler whose bones were repaired before he was even born.