Instructions for a heatwave

"When a recently retired family patriarch clears out his bank account and disappears during a sweltering summer in 1976, his three children converge on their mother's home for the first time in years and track clues to an ancestral village in Ireland, where they uncover illuminating family secrets."@en
"It's July 1976. In London, it hasn't rained for months, gardens are filled with aphids, water comes from a standpipe, and Robert Riordan tells his wife Gretta that he's going round the corner to buy a newspaper. He doesn't come back. The search for Robert brings Gretta's children - two estranged sisters and a brother on the brink of divorce - back home, each wih different ideas as to where their father might have gone. None of them suspects that their mother might have an explanation that even now she cannot share."
"A sweeping family drama, in which the disappearance of a family patriarch forces three adult siblings to gather together to find him and to confront what they really know about their father and themselves."@en
"A portrait of an Irish family in crisis in the legendary heatwave of 1976. It's July 1976. In London, it hasn't rained for months, gardens are filled with aphids, water comes from a standpipe, and Robert Riordan tells his wife Gretta that he's going round the corner to buy a newspaper. He doesn't come back."@en