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.

Shaun has a rare condition, acromegaly, that causes his hands and feet to keep growing. Sofia needs an operation to alleviate a Chiari malformation: her brain is pushing into the spinal canal.