Sadly, multiple murder of spouses (and even children) is not unheard of -
Innerart - Artbits June 11, 1998
Timothy Boczkowski
of Pittsburgh PA was charged in November 1994 with the murder of his second wife, Maryann, after she was found floating in the couples' hot tub. The incident occurred almost exactly four years after Boczkowski's first wife, Mary Elaine, was found dead in a bathtub at their Greensboro NC home. Police described the earlier death as "suspicious from the start", but did not file charges. Wife #1 was insured for $125,000; wife #2 was insured for $100,000.
Wife killer gets death sentence
A man was sentenced to death for the killings of his fourth wife and a longtime friend who prosecutors said helped kill the first two wives...
(Gerald) Hand was convicted Friday of killing his wife, Jill, 58, and friend Walter "Lonnie" Welch, 55, on Jan. 15, 2002, at the couple's home north of Columbus.
Prosecutors also suspect him in the deaths of his first two wives, but he has not been charged...
Case of two wives killed years apart goes to jury | The San Diego Union-Tribune
... a 58-year-old Santee man charged with murdering two of his wives – one in 1973 and the other 30 years later.
William Peter New is charged with killing Somsri New and Phyllis New the same way. Prosecutors said each woman was killed with gun shots to the back of her head while she slept.
BBC News | EUROPE | Pastor gets life for family murders
A Hungarian-born pastor ...
Andras Pandy, 74, had been found guilty of murdering two of his wives and four of his children, as well as raping three of his daughters.
*********************************************************************************************************
There are many more stories like this out there. These guys don't breathe a sigh of relief thinking that they're lucky to have gotten away with the impossible. If anything, it seems to embolden them, making it more likely that they will kill again.
If there is anyone reading this that knows Raven's girlfriend, please take terminatrixator's advice to heart . Think about this situation and realize that it's better safe than sorry. If he could kill once in this manner, he can do it again.