About this season
Talented and successful surgeon Daniel Milton has his world shattered when his wife Beth develops a fatal degenerative disease. After conventional treatment options run out, Daniel partners with the lonely yet resourceful Lee to start a literal Underground clinic in the vast network of tunnels beneath Temple Tube Station in London.
Episodes (8)
1. Episode 1
7.2Aired 13 September 2019 • 43 min
A surgeon's morals are tested after he sets up an illicit clinic beneath London.
2. Episode 2
8.0Aired 20 September 2019 • 43 min
The clinic's secrecy falls into jeopardy when Daniel puts Beth's ex-colleague Anna in an impossible position.
3. Episode 3
8.0Aired 27 September 2019 • 43 min
Daniel finds he's moving far away from the man he thought he was, as dealing with London's most dangerous people brings big problem
4. Episode 4
8.0Aired 4 October 2019 • 43 min
Things grow complicated between Daniel and Anna as they battle to save someone they love. Lee takes a risk that endangers them all
5. Episode 5
8.3Aired 11 October 2019 • 44 min
Daniel's descent reaches new depths as he enters the world of organ trading. As police and gangsters close in, Jamie makes an error.
6. Episode 6
8.0Aired 18 October 2019 • 43 min
Hall and Moloney get a break in their hunt for Jamie. Daniel faces the ultimate question - how far will he go for someone he loves?
7. Episode 7
8.3Aired 25 October 2019 • 44 min
Daniel crosses a line from which he can never return. Lee's forced to make a big decision about the clinic. But will it be too late?
8. Episode 8
8.7Aired 1 November 2019 • 44 min
As Mercy and Keith close in, Daniel, Lee and Anna discover just how far they'll go to save themselves.