I see the first two deaths as pure accident, and if anyone's to blame for Dennis' demise it's Dennis, but Mimi's death wouldn't have happened if King hadn't been trying to rig a booby trap. It's still an accident, but this one *is* his fault. I don't know what American law would make of it, but going by the cramming in health & safety legislation I got a few years ago, under English law he'd be had up on criminal charges about tampering with the wiring even if he convinced the police that the death was an accident.