It is 1964 and, during their investigation of the murder of a lonely old man in his dilapidated mansion, Gently and Bacchus stumble upon a world beyond their initial comprehension and belief, as BBC One begins a new series of Peter Flannery’s Inspector George Gently stories.

As they dig deeper into the history of former children’s home Harrison House, Gently and Bacchus are forced to re-examine seemingly clear-cut evidence.

They have a prime suspect, a “Dummy lad” named Harry Carson, who was once an inhabitant of the home, but their investigation is not helped by everyone around them, including property developer Cora Davidson, either having a reason to keep the truth hidden or choosing to remain ignorant rather than face the shocking truth.

Sunday 3 May
8.30-10.00pm BBC ONE