Dean Koontz's new novel goes to the heart of what it means to be good in a time beset by malice. The story of two brothers, Dylan and Shepherd O'Conner, and Jillian Jackson, the traveling companion whom evil chance - or divine design - bestows upon them, BY THE LIGHT OF THE MOON unfolds over twenty-four hours as these intrepid souls race to puzzle out a vicious violation committed against them. Dylan, an itinerant artist, has devoted his life to caring for the autistic Shep, whose challenges may lead them to disaster as they traverse perilous paths only steps ahead of deadly pursuers. Jilly now sees nightmares before them, and her visions prove prescient as they move together through darkness and light toward a destiny beyond the realm of imagination.