On March 1st, 1976, William Bradford Bishop vanished into thin air after murdering his wife, three kids, and mother. Now he is wanted by the FBI but has yet to be found.
Credits/Sources:
Bradford Bishop Wiki Page
Trace Evidence Podcast on the Case
Bethesda Magazine Article on case
Bethesda Magazine Article on Kathy’s discovery
FBI Most Wanted page on Bradford.
NY Times article on Kathy’s discovery