The Calamities by Chuck Wendig

The heir to one of the world’s most influential families reckons with the demonic secret of their power in this contemporary dark fantasy that melds occult magic with shocking family drama, from the New York Times bestselling author of The Book of Accidents.

Mourning Mayne knows he’ll one day bear the duty of managing his family’s vast empire of wealth and power. But the feckless Mourning has always struggled to accept this legacy of cruelty, domination, and exploitation . . . and something even darker.