From desk worker detective to Sergeant at Scotland Yard, Adelaide Gregson has come a long way from her days in Manhattan. When one consulting detective catches her eye, things get complicated. When a case now means life or death, will sentiment prove to be a chemical defect found on the losing side? Or will it be the key, the one thing that's been missing from their lives? Follow the adventures of Sherlock Holmes and Adelaide Gregson as they take on everything life has to throw at them in Hello Detective.