A man who drowned in a town river last year was a “brilliant person” who was consumed by “darkness” when under the influence of drugs and alcohol, an inquest heard. Robert McAdam’s family reported him missing after last seeing him in late October. Despite a widespread appeal to locate him, the 28-year-old was found dead on Wednesday, November 15. An inquest into his death took place this morning at Norfolk Coroner’s Court, with those present hearing that Robert – who lived at Castle Road in Wormegay – had issues with drug and alcohol misuse for a number of years. In the last months of his life…