This episode, patients arriving at King's College Hospital in London include 26-year-old Nicholas, whose jaw has been dislocated in an unprovoked attack, and Tyrell, 17, who needs to have a blackened toenail removed following a football injury.
The medical team, patients and their families face up to the meaning of life and death. Former motorbike racer John, who's 77, has been sent to Emergency after a routine health screening revealed that his main artery could burst at any moment. The only option is major surgery, which could be dangerous at his age.
Consultant Emer Sutherland helps treat an eight-year-old who has fallen over two metres onto concrete while riding his BMX, losing his front teeth and possibly injuring his head and spine.
Single father Gary, 47, is put in a medically induced coma at King's College Hospital to reduce the risk of brain damage following a serious motorcycle accident, and 69-year-old Steve confronts his fear of needles when a nurse has to remove a fishbone stuck in his finger.
The medical team faces a range of sport and drink-related injuries on a busy Saturday. But things turn darker when a family party goes horribly wrong, leaving a father and son with life-threatening injuries.
A woman with a weak immune system owing to the radiotherapy she underwent for breast cancer is bitten by her cat, a minor injury that could cause her serious problems. A 71-year-old with terminal cancer is brought in with breathing difficulties and a decision must be made about whether to resuscitate her if her condition worsens.
Scaffolder Thomas arrives after suffering a head injury at a building site and doctors are concerned he may have fractured his skull, back or neck after losing consciousness and convulsing at the scene and retired architect Edgar comes in after suffering an asthma attack. He's struggling to breathe, but A&E doctor Des realises that it's not just asthma that's troubling the 79-year-old. Edgar confides in Des that his wife of 45 years, who was a nurse, passed away only a few months earlier. He's grieving for her and has no-one to turn to, so Des tries to get him some support.
This episode focuses on accidents. Construction worker William has been trapped under a cherry picker, breaking his leg in three places and crushing his chest. Nick has fallen from a ten-metre ladder onto concrete, landing on his head, resulting in a severe brain injury.
New staff nurse Sophie attends to 22-year-old chef James, who accidentally stabbed himself in the leg while chopping tomatoes. During an eventful shift, she also uses chest compressions to keep alive another patient and helps 54-year-old Bernard, who was out cold for 10 minutes after falling and banging his head against a car.
Ahmed has dislocated his shoulder in a game of American football and has to grit his teeth while doctor Matt puts it back into place. Meanwhile Simon is brought in by ambulance after being found unconscious at the bottom of a stairwell.
78-year-old Reginald is dangerously ill. He woke up with severe stomach pain, and the Emergency team have concluded that his condition is life-threatening. But can they save him?
Five-year-old Daisy is rushed in with severe burns after her skirt caught alight on a gas fire. As paediatric sister Jen tries to ease the girl's distress, her father Damien also has treatment, having put out the flames with his bare hands.
War veteran Douglas, 94, is brought into King's College Hospital with breathing difficulties by his youngest daughter and full-time carer Sylvie, while 97-year-old Hector's airway is at risk of collapsing and his blood pressure is dangerously high.
These 24 hours take place on a Monday - often the busiest time of the week for the Emergency department. Ambulances are arriving all the time, and the department is stretched to its limit.
Scott deals with a very busy shift in resus, where every bed is occupied and patients continue to arrive, including Pauline, who has hit her head in an accident and David has life-threatening injuries after falling 30 feet from a roof.
Seventy-four-year-old Ted and his wife Irene are on their tenth visit to Emergency this year. Ted has already been diagnosed with terminal bladder cancer, but his problems have got worse, and after getting blood test results he's been urgently sent to King's.
A nine-year-old girl is rushed into resus with memory problems after slumping over her desk at school. Consultant Liz has difficulty making a diagnosis, suspecting the pupil may have a viral infection that causes a swelling of the brain.
Sarah arrives concerned that a brain tumour she first had as a teenager has returned while Wayne seeks treatment for knife wounds to his leg after he tried to stop someone stealing his girlfriend's phone.