Watch Reported Missing

It's 11:45pm when a woman calls South Yorkshire Police to report her sister missing; office worker Yasmin has failed to return home from work, which she finished over six hours ago. According to her family, this behaviour is extremely out of character for Yasmin, who normally rings immediately after work to let them know she's on her way home.

When Nicola returns from taking her daughter to school to discover that her 52 year old husband Mark has left the house, she immediately calls the police. The simple fact that he has gone out rings alarm bells. When officers from South Yorkshire Police attend the scene, Nicola discloses that she thinks Mark's pocket knife is missing too.

When 87 year old Brenda gets a call from her son Gavin's neighbours, it's with alarming news. 58-year-old Gavin has not been seen for two days, and has vanished from his flat leaving the front door wide open. Brenda alerts South Yorkshire Police and PCs Toby Brown and Joshua Epworth head to the flat to meet her. The flat is in disarray.

When Becky discovers that her 18 year old son Matthew has failed to return home from college on his usual evening bus, she immediately calls the police. This would hardly be out of the ordinary for many young people, but Matthew is autistic, which means that he has never missed the bus before.