Reported Missing | Series 4 Preview (BBC One)

From the moment the phone rings, follow every step of the frantic, gut-wrenching search and wait with those left behind. In the search for the missing, every second counts.

Episode 1: Police mount urgent searches for two vulnerable autistic young men. Eighteen-year-old Matthew has missed his usual bus home, while 29-year-old Luke has disappeared from his care home.

Reported Missing returns Tuesday 11th October at 9pm on BBC One.