The tragedy that occurred at the Marches’ manor in the respectable district of Cardington Crescent is almost unbelievable. After all, the London high society was gathered here—the hosts, aristocrats, received Lord George Ashford together with his wife Emily. In such houses, there’s no room for crimes. And yet one morning George was found dead—poisoned. Without doubt, the killer is someone from the household. Suspicion fell immediately on Emily. After all, it’s no secret that George had an affair with the beautiful wife of William March right before his own wife’s eyes. And when Mrs. March herself dies soon after, Emily’s motive becomes obvious to everyone—jealousy. But she is determined to defend her good name. She calls for help—her elder sister Charlotte and Charlotte’s husband, police inspector Thomas Pitt…