Anglemore Park is the ancestral home of Lady Emily Hargreaves husband Colin. But the stately calm of country life is destroyed when their neighbor, the Marquess of Montagu, bursts through the French doors from the garden and falls down dead in front of the shocked gathering. But who has a motive for murdering the young aristocrat? The lovely cousin who was threatened by his engagement, the Oxford friend he falsely accused of cheating, the scheming...

A Crimson Warning features beloved character Lady Emily Hargreaves, who can usually be found waltzing or reading from the aeneid when not fighting for women's suffrage. Lady Emily's enjoyment of the season, however, comes to an abrupt end when the red paint being splashed on doorsteps heralds ill-even deadly- tidings.