ITV3 A Touch of Frost Catch up on the ITV Hub David Jason as Detective Inspector Jack Frost - an unconventional policeman with a sympathy for the underdog and an instinct for moral justice. Sloppy, disorganised and disrespectful he attracts trouble like a magnet. 2 episodes available to watch Share this programme: Share on Facebook Share on Twitter Share on Google+ Series 3 1. Appropriate Adults Sun Sunday 28 Aug 6.50am Billy Conrad has Down's syndrome and something to hide, but is he capable of murder? Series 2 4. Stranger in the House Yesterday 10pm Trying to trap a dangerous rapist, Frost exposes a junior officer to danger.