On March 7, 1981, 19-year-old Ivan Gutierrez disappeared from Hallandale, Florida, along with his live-in girlfriend Angela DeLawder, 20; her mother Gertrude Menacher, 37; and Menacher’s boyfriend Charles Gibson, 39. The four were last seen after a dinner engagement. Gutierrez and DeLawder lived together in the 200 block of southeast Ninth Court in Hallandale.

Investigators quickly uncovered links to criminal activity. Gibson had a robbery conviction and was on lifetime parole, was connected to gang members, and worked as an enforcer for drug syndicates. All four were reportedly heavily involved in the drug trade. Menacher and Gibson had outstanding warrants for allegedly assisting a prison escapee, Harvey Michael McElroy, who had been found murdered in January 1981. Police warned DeLawder that Menacher could be in danger because of what she knew about McElroy’s death.

Key leads included a March 14 tip that led police to an abandoned Cadillac at Miami International Airport and witnesses who saw people emptying Menacher’s Miami apartment into a U-Haul; one of those people reportedly said the residents had been killed on an expressway in northern Florida, a remark the neighbor interpreted as a fatal accident. Authorities have also considered the possibility the group went into hiding, with Germany or Colombia mentioned as potential destinations. No sign of Ivan Gutierrez or the other three has been found.

If anyone knew Ivan, his movements, or had information about Menacher, DeLawder, or Gibson before March 7, 1981, please come forward.