Has there ever been a case where someone convicted of three or more murders was released from prison?
Quite a few eventually get released, Wikipedia has a long list of serial killers, just search that list for the word "released":
https://en.wikipedia.org/wiki/List_of_serial_killers_by_country
The only one I could find was Franz Schmidt who killed three people between 1957 and 1983. Was released in 2003 and died in 2017.
Only two convicted murders but one of them was her own sister, Karla Homolka served 12 years and got out in 2005.
Her and her husband were sick af. It's good they got caught (relatively) early into their thing, they almost certainly would've continued on with that shit indefinitely if they could've.
https://time.com/7176342/pete-hegseth-donald-trump-pardon-war-crimes-military/
at least two of these dudes fit the bill
Yes. He's never disclosed where the bodies are, so there's never been enough physical evidence for an arrest.
I would add an addendum that they’re 3 separate murders cases and not a single event.
I don’t immediately know what in particular transitions someone from killer to “serial” killer.
But I could see if it was someone who wiped out a van of people or a husband coming back home to his wife cheating with a couple and murdering them being potentially released after a long sentence.
generally, a serial killer does multiple individual murderers over an extended period. this contrasts with a mass murderer, who kills a bunch of people in a single event, or a spree killer who does multiple killings over a short time span. a serial killer may take a couple years to kill 5 people while a spree killer does it in a weekend, and a mass killer manages it in a few minutes.
Frans Hooijmaijers, Dutch nurse who killed between 5-259 people from 1970-1974. Was originally sentenced to life however this was changed in 1977 to 18 years imprisonment and Hooijmaijers was released in 1987. He died in 2006.