A gravestone marks the burial site of twin brothers Robert and Corey Grandidier, who died at age 2, at Dry Creek Cemetery in northwest Boise. In 1992, Alan Grandidier, 36, killed his sons and himself amid a divorce and child custody dispute.
A gravestone marks the burial site of twin brothers Robert and Corey Grandidier, who died at age 2, at Dry Creek Cemetery in northwest Boise. In 1992, Alan Grandidier, 36, killed his sons and himself amid a divorce and child custody dispute. Darin Oswald doswald@idahostatesman.com
A gravestone marks the burial site of twin brothers Robert and Corey Grandidier, who died at age 2, at Dry Creek Cemetery in northwest Boise. In 1992, Alan Grandidier, 36, killed his sons and himself amid a divorce and child custody dispute. Darin Oswald doswald@idahostatesman.com

Experts know why parents kill their kids, then themselves. The challenge is saving them.

December 07, 2016 05:16 PM

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