Meaghan brings us the case of the Texarkana Moonlight Murders from 1946, the Phantom Killer terrorized Texarkana's lovers for three months just to vanish and never resurface.
Sources:
https://encyclopediaofarkansas.net/entries/texarkana-moonlight-murders-4478/
https://vault.fbi.gov/texarkana-phantom-moonlight-murders/texarkana-phantom-moonlight-murders-part-01-of-02/view
https://www.historicmysteries.com/texarkana-moonlight-murders/
https://www.texasmonthly.com/the-culture/texarkana-murder-mystery/