Just over a year prior to Betsy's murder, there was another murder of a somewhat similar nature which occurred just west of Philadelphia.
A young man was stabbed in the chest by someone using a round spike type of weapon (something perhaps like a sharpened screwdriver). His body was left by a highway ramp near Downingtown, PA.
That young man remained an unknown John Doe from October 1968 until 2012 when he was finally identified as Robert Daniel Corriveau, a US Marine who had been a patient at the Naval Hospital Philadelphia. There is a thread on his case in Websleuths. Although he was finally identified, his murder remains unsolved.
One possible suspect is Haefner.
A young man was stabbed in the chest by someone using a round spike type of weapon (something perhaps like a sharpened screwdriver). His body was left by a highway ramp near Downingtown, PA.
That young man remained an unknown John Doe from October 1968 until 2012 when he was finally identified as Robert Daniel Corriveau, a US Marine who had been a patient at the Naval Hospital Philadelphia. There is a thread on his case in Websleuths. Although he was finally identified, his murder remains unsolved.
One possible suspect is Haefner.