Mark Steven Scott was 17 when he left his Houston home on April 20, 1972 to spend time with friends and never returned. His family soon received a postcard purportedly from him saying he had found work in Austin and would return after saving money; that postcard was later shown to be part of a deception.

Mark is listed as one of the victims of Dean Corll, who, with accomplices Elmer Wayne Henley Jr. and David Owen Brooks, lured teenage boys to Corll’s home where they were tortured and killed. According to the case details, Mark was lured there by Henley and killed on April 21, 1972; Henley later admitted involvement and described the circumstances of Mark’s death.

Investigators once believed remains recovered from a mass grave included Mark, but DNA testing in 2011 identified those remains as another victim, Steven Kent Sickman. Mark’s body has never been recovered and is presumed buried at High Island Beach, a location now submerged.

Does anyone have information about Mark’s last known movements or the friends he was with on April 20, 1972?