Good Omens by Neil Gaiman, and Terry Pratchett

“The quick-witted humor of Terry Pratchett, driven by the nonsense of the mundane, collides seamlessly with the picturesque darkness of Neil Gaiman, where the mundane reveals itself to be secretly fantastic, in this modern comedic fantasy about a demon, an angel, and the antichrist – who is an eleven-year-old boy named Adam – and his loyal hellhound, Dog.” — Lonnan