In recent weeks, neurosurgeon Roxanna has gone from wanting to be part Professor John Gaskell’s pioneering stem cell trial to stepping down from it, then ‘investigating’ her friend.

Convinced Gaskell is putting his own ambitions before patient care, this week, Roxanna wants to get into his wet lab to hunt for information – and asks young doctor Meena if she’ll give her the entry code for the lab to gain access. Meena secretly agrees and, inside the lab, Roxanna makes a shock discovery…

Back on the ward, Roxanna then makes a huge discovery about Laszlo Furz, the man Gaskell cured of motor-neurone disease. Armed with her findings, Roxanna decides to confront Gaskell. When he refuses to listen, however, Roxanna feels she has no choice but to tell Henrik Hanssen what she knows.

Gaskell sees red and, as the pair argue, events take a devastating turn…