An Apparatus Infernum Novel

Danger stalks the city of steam and shadows.

Janus Mikani and Celeste Ritsuko work all hours in the Criminal Investigation Division, keeping citizens safe. He’s a charming rogue with an uncanny sixth sense; she’s all logic—and the division’s first female inspector. Between his instincts and her brains, they collar more criminals than any other partnership in the CID.

Then they’re assigned a potentially volatile case in which one misstep could end their careers. At first, the search for a missing heiress seems straightforward, but when the girl is found murdered—her body charred to cinders—Mikani and Ritsuko’s modus operandi is challenged as never before. It soon becomes clear the bogeyman has stepped out of nightmares to stalk gaslit streets, and it’s up to them to hunt him down. There’s a madman on the loose, weaving blood and magic in an intricate, lethal ritual that could mean the end of everything…A.A. Aguirre, a pseudonym for husband-wife writing team Ann & Andres Aguirre, is the author of the Apparatus Infernum novels, Ann specializes in compelling characters; Andres excels at meticulous worldbuilding. By day, she's a bestselling novelist, the USA Today bestselling author of the Sirantha Jax novels, the Dred Chronicles, and the Corine Solomon novels, and he is a pharmaceuticals tycoon. Together, they form Megatron. Or not. Actually, they write books.