Voodoo Men, Hoodoo women, and root doctors say they know how to use eggs; graveyard dust; forks in the road; the numbers 3, 7, and 9; pins and nails; red flannel bags, yellow homespun; urine, faeces, and blood; shoes and clothing; black cats and black hens; doorsteps; and the interior and exterior corners of houses to conjure good and to conjure evil. Voodoo and Hoodoo tells how these spiritual descendants of African medicine men and sorcerers "lay tricks" and work their magic, and explains the hold these practices have had on their believers from the Old World origins until today.