Ten Second Staircase

A controversial artist's murder, staged as part of her own installation, sets the Peculiar Crimes Unit on a baffling case with no clear suspects or motives. The only witness, a twelve-year-old, describes a cape-clad killer on a black stallion. As the investigation unfolds, Bryant and May, alongside May's agoraphobic granddaughter April, delve into a web of artistic rivalries, scandals, and a historic crime spree that could jeopardize their partnership once more, all while a wave of "Highwayman Fever" sweeps through London.