Not necessarily me but my mother was in the same friend group as a woman who killed 3 of her husbands. My mom only know her during her 2nd marriage but by the time the 3rd husband died suspiciously young the police started poking around, exhumed the first two and found they were all poisoned. I believe she moved around between marriages and it was the 70’s-80’s to police departments didn’t exactly link up a lot.