‚Poor little rich kids... Places like the Elworthys' mansion... they're snow globe worlds, aren't they? They're less real.' 1925, Surrey, England. A Victorian country house, a glittery dinner, a locked room mystery. A young secretary passionate about Sherlock Holmes, Agatha Christie's novels, and women's rights, launches her own investigation. The two new friends she ropes in - the posh boy and the nervy silversmith - would really like to help, but they're also quite busy searching a place in different spheres of life and falling in love with each other, not that they'd have noticed.