American Gods — Neil Gaiman

Shadow is a man with a past. But now he wants nothing more than to live a quiet life with his wife and stay out of trouble. Until he learns that she's been killed in a terrible accident.

Flying home for the funeral, as a violent storm rocks the plane, a strange man in the seat next to him introduces himself. The man calls himself Mr. Wednesday, and he knows more about Shadow than is possible.

He warns Shadow that a far bigger storm is coming. And from that moment on, nothing will ever be the same ...