2019 in rexburg idaho national center for missing and exploited children the mysterious case goes beyond just the missing children and also includes the deaths of vallow and daybells former spouses as well as rumors of a cult vallows brother alex cox shot and killed her fourth husband in her chandler arizona home on july 11 2019 police said police said charles vallows death is being looked at as selfdefense about six months after that shooting on dec 11 2019 cox was found unresponsive in his gilbert arizona home and was later pronounced dead according to brenda carrasco a public information officer for gilbert police autopsy results from coxs death have not yet been made public in between charles vallow and coxs death chad daybells wife also died under circumstances that are now believed to be suspicious tamara tammy daybells death on oct 19 2019 was initially thought to be natural however her remains were exhumed in late december and authorities were looking into whether or not she was poisoned police said authorities later learned through their investigation that daybell collected at least 430000 in life insurance after his wife died according to a probable cause statement both vallow and daybell have also been accused of being members of a cult vallows niece melani boudreaux is also accused of being in the same cult according to documents from a custody battle between her and her former husband brandon the documents released last friday and obtained by abc news allege that boudreaux is involved in a cult where numerous members adults and children alike have been being killed off like flies it also claims that boudreaux knows where vallows two missing children and her unwillingness to help authorities find them is daunting abc news john capell and maryellen resendez contributed to this report