As Mercy and Keith close in, Daniel, Lee and Anna discover just how far they'll go to save themselves.
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.
The peaks and the valleys. Find the essential episodes — and the ones to skip.
As Mercy and Keith close in, Daniel, Lee and Anna discover just how far they'll go to save themselves.
A desperate Daniel and Lee deal with a dangerous medical fixer. Beth decides to pursue her research. Eve's horror at Daniel's duplicity is offset by an amazing discovery.
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?
The clinic's secrecy falls into jeopardy when Daniel puts Beth's ex-colleague Anna in an impossible position.
Each point is an episode, plotted in order. Colored bands mark season boundaries. Look for the rise, the plateau, or the decline.
High votes + high rating = beloved classic. High votes + low rating = notorious stinker. Low votes + high rating = hidden gem.
Did each season build or fizzle? Green means the finale outscored the premiere. Red means the opposite. Longer arrows, bigger swings.
How steady is each season? Tightly clustered dots mean reliable quality. Scattered dots mean a wild ride.
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