ITV Midsomer Murders Catch up on the ITV Hub Detective series based on the novels by Caroline Graham. Inspector Barnaby investigates murder mysteries in Middle England. 3 episodes available to watch Share this programme: Share on Facebook Share on Twitter Share on Google+ Series 18 Latest 3. Breaking the Chain Sun Sunday 21 Aug 8pm Barnaby and Nelson are drawn into a ruthless world of blackmail, bribery and bloodshed. 2. The Incident at Cooper Hill Sun Sunday 14 Aug 8pm When a forest ranger dies, UFO spotters are convinced aliens are responsible. 1. Habeas Corpus Sun Sunday 7 Aug 8.20pm When a body goes missing, DCI Barnaby and DS Nelson seek to identify the culprit.