A road traffic accident caused 52-year-old Mark to suffer cardiac arrest, and as he battles for survival at St George's Hospital, his wife Jacquie reminisces about how their relationship blossomed from friendship into romance. A severe hip dislocation seems to be the diagnosis when 25-year-old Kayley arrives in A&E after being thrown from her horse, and 23-year-old receptionist Melissa books an appointment with nurse practitioner Craig to find out why she is having trouble hearing