A neurosurgeon races to stop a 21-year-old Caitlin from becoming blind. A brain cyst endangers Toni's life and a massive deformity of the spine causes Steven to be operated on.

A patient is sped into theatre after a stroke. Lorna is rushed in for emergency surgery after breaking her back. A consultant neurosurgeon must act quickly to avoid paralysis.

Surgeons begin to fear that without urgent surgery Fifty-three-year-old Theresa could become paralysed after she's rushed to hospital with weakness in her arms and legs.