Got a historical thriller in an urban setting? Well, nobody will know what you’re talking about unless you give it a sepia-toned cover in which a man in a hat (and preferably a cape or swishing frock coat) is walking away from the camera:
(Actually, is the guy on the cover of The Alienist walking towards us? Oh, and take note of the man on the cover of The Interpretation of Murder – you’ll be seeing him again in a moment…)
Sepia may be a bit old hat now, so you could always go with blue instead:
(…yep, there he is again, on the cover of the same author’s The Death Instinct.)
