It's generally a fine idea to set up a secure alarm system at your house that alerts police at the first sign of trouble. Unless, of course, you happen to be growing marijuana illegally inside. Such is the fate of 53-year-old Marlon Gene Kelley of Muskegon, Mich., reports MLive. Kelley's home alarm tripped one day when he wasn't home, and officers arrived at the scene and walked inside through an unlocked door. They found eight plants, five guns, and a bunch of grow equipment. For Kelley, it all added up to three to 12 years in prison.