You said the husbands of the dead women were all out of state. Did they have anything in common such as employer, type of work, etc.?
Creepy, for sure.
They did have one thing in common: they all had girl friends, one of which even did the deed.
Search Warrant: Mistress Confessed To Woman's Killing
and
Woman's Ex A Person Of Interest In Her Disappearance
and
Husband Stays Out Of Sight As Investigators Probe Wake Mother's Slaying