When garden designer Addison takes up residence at an old English manor, she stumbles upon a mystery dating back to World War II that involves the enchanting camellia orchard and an old gardener's notebook, which conceals a series of horrible crimes.
Attempting to blaze a new trail for women at the University College London in 1923, research assistant Saffron Everleigh becomes involved in solving the murder of a professor's wife who appeared to have been poisoned at a school dinner party.