01. Episode 1
In north London, we follow Daren Francis, one of the UK's leading bowel cancer surgeons. Retired nurse Doris is in great pain with a tumour that Daren suspects is cancerous and blocking her bowel.
02. Episode 2
We go behind the mask to reveal what life is really like for consultant breast surgeon Sascha Dua, juggling the high-pressure world of the operating theatre with life as a single mum.
03. Episode 3
We follow consultant brain surgeon Omar Pathmanaban as he tackles a rare tumour that could be fatal, and also a complex and demanding procedure requiring surgery via the nose.
04. Episode 4
Following consultant heart surgeon Inder Birdi at the Cromwell Hospital as he performs open-heart surgery on 70-year-old retired engineer Mike and fixes 59-year-old Sara's leaking heart valve using state-of-the-art technology to operate through a 3cm incision.