In the words of one deadly dad – convicted killer Aaron Schaffhausen – "You can come home now because I killed the kids." The men in this slide show did the unthinkable – they killed their children.
Some used guns, while others beat the children to death with their bare hands. In one case, the deadly dad used a hatchet.
One convicted killer, John Battaglia, is scheduled to be executed on March 30 in Texas. The rest will remain safely behind bars for years to come or are no longer living. But their crimes can still send a chill down your spine. Here are their stories.