London's lawbreakers and loathsome lords... beware! How does a wealthy widow avoid the marriage market in 1890s London? If you're Lady Theodosia Fortescue-Brown, you hide behind outrageously bad clothing and glasses you don't need. After the disappearance of her husband, Theodosia can't imagine giving up her freedom to marry again and relishes her role as detective to the ladies of the upper echelons of society. When a priceless necklace on loan from the Royal family is stolen, Theodosia must work with the scandalous Lord Montague to recover it before the theft is discovered. But somewhere between setting a brothel on fire, being knocked out in a cemetery in the middle of the night, and narrowly avoiding death via Scotch egg, Theodosia and William fall in love...