Seventy-three-year-old Velma Kellen couldn't figure out why her house had begun smelling like marijuana recently, or why she kept finding the gate to her yard mysteriously open.

Then when her house stopped warming up not long after she purchased a new furnace, she decided to call a repairman to find out what was going on.

She never imagined that the repairman would find her heating problem had anything to do with the open gate and the smell of pot.

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