I used to live in Los Gatos before moving to Tucson - had a good friend down the street who was always telling me to not wander around in the mountains between Los Gatos and Santa Cruz. I never knew why he was so nervous about the hills - until another friend mentioned that long before I moved to Silicon Valley my first friend's oldest son had gone hiking in the hills with a few high school classmates and had gotten separated. They found his body the next morning at the bottom of a hill - apparently murdered for stumbling on to an illegal operation of some kind.