The Graveyard Position by Robert Barnard

From master of mystery Robert Barnard comes a brilliantly witty and piercingly observant new suspense novel featuring one of the most dysfunctional families ever to grace crime fiction. Meet the Cantelos of Leeds, England. To call the Cantelos dysfunctional is actually a wild understatement. But is one of them also a killer? Clarissa Cantelo, a skilled clairvoyant, apparently thought so. Believing that her sixteen-year-old nephew, Merlyn Docherty, was in peril, she sent him into hiding in Italy, far away from the rest of her family. She told them he was dead. It was safer that way. Now Clarissa herself has died, and Merlyn, a successful lawyer and civil servant who still lives abroad, has returned to Leeds to claim his inheritance. First, he must prove his identity. Is he really Merlyn or, as some of his long-lost relations say they suspect, is he an imposter? Merlyn doesn't mind confirming his identity, but he'd at least like to move into the house that Aunt Clarissa lef...