Steven Timothy Judy (May 24, 1956 – March 9, 1981) was an American mass murderer and suspected serial killer who was convicted of murdering Terry Lee Chasteen and her three children: Misty Ann, Steve, and Mark, on April 28, 1979. He was executed for the murders on March 9, 1981, via electrocution, becoming the first person to be executed in Indiana since 1961.