A day shift with paramedic crews from West Midlands Ambulance Service brings a spike in mental-health cases. Justin and Dawn attend an emergency call-out that comes from a tweet.

It's the last Saturday night before Christmas and it was always going to be a busy night for the service, with controller Sui having to prioritise stabbing victims and reports of drowning over patients like Betty, whose daughter says she's fine but needs help getting her up having fallen to the floor.