There I was, in the middle of a nightmare of a Southern California heat wave, driving up into the Hollywood Hills, heading toward the garden of director Wes Craven, creator of the ghoulish Freddy Krueger character and the terrifying Scream spoofs, among other horrors. What would I find? A sweep of the moody blackish Geranium phaeum, a.k.a. mourning widow? A lone specimen cactus in the shape of Freddy's knife-fingered glove?