God, That's Good
Mr. Freeze (aka Karen's dead hubby)
This guy was gone for awhile, but certainly not forgotten by Mrs. McCluskey. She kept him on ice until there was a power outage on Wisteria Lane. While looking for a popsicle, Parker Scavo stumbles upon the body. He doesn't tell anyone about it, but the police find out anyway in what had to be the ultimate cold case.