It Tolls for Thee

Arthur and Morven receive some news which leads them to question what's really important - can love win out? Mo is full of regrets when she struggles to face up to her actions of the previous night. Will she realise before it's too late that her biggest regret will actually be letting someone go? Serena is forced to reassess her working life when she makes a mistake which has devastating consequences on the hospital and its staff.