The team feel the pressure more than ever when they treat a horrifically burned patient. Glen grows closer to Fiona, too, shedding light on his army days
The victim of a dog attack is brought in with the dog still attached to him.
Devastated by news of Fiona's engagement, Glen races off, only to be involved in a life-or-death emergency.
The prognosis does not look good as the team attempt to save a teenage drowning victim. It results in a standoff between Glen and Clive. A bold move is made by Fiona.
Consultant Glen Boyle takes control when a woman is brought in with a fence post impaled through her face - and insists on opening up the patient when she starts haemorrhaging, uncovering a heart-wrenching explanation for the injuries. Amid all the action, Fiona struggles to deal with the fact that she's working with her ex once again.
The team sets to work on a badly beaten man covered from head to toe in lesions and lacerations - and interests are piqued by the discovery of a serial number branded on the patient's arm, suggesting he may be a slave labourer or a victim of trafficking. However, as the man's temperature soars, the doctors realise they may be dealing with a dangerous, and highly infectious, disease - and the trauma centre is forced into lockdown.
Tensions run high as the team works to save a cyclist who was involved in a serious collision with a HGV, and with the patient flatlining, Glen makes a bold move to try to turn things around. Meanwhile, the surgeon comes to a decision about the status of his relationship with Fiona.
There are some obstacles to deal with as the team tackle one of their trickiest cases yet.