Death at the Diogenes Club

A locked-room murder at London's most secretive gentlemen's club would be enough of a puzzle on its own — but for Lucy James, the case arrives at the worst possible moment. Still carrying the weight of her last investigation, and with her relationship with Jack growing complicated in ways neither of them can easily name, she has more than one wound to tend to. Yet the trail leads toward one of London's most dangerous criminal minds, leaving no room for hesitation. This is the kind of mystery where the emotional stakes run alongside the intellectual ones, and both refuse to stay tidy.

What distinguishes this fifth installment is how confidently Elliott and Veley manage tonal balance — the Victorian atmosphere feels genuinely inhabited rather than decorative, and Lucy's voice carries real interiority without slowing the plot's momentum. The locked-room puzzle is constructed with proper rigor, the kind that invites readers to test their own deductions before the solution arrives. At 363 pages, the book earns its length, developing character threads alongside the central investigation in ways that make the series feel cumulative and rewarding rather than episodic.