Mother's Day

The true story of Theresa Knorr, the twisted child abuser who murdered her daughters—with the help of her sons—told by a former New York Times reporter.

In June 1985, Theresa Cross Knorr dumped her daughter Sheila’s body in California’s desolate High Sierra. She had beaten Sheila unconscious in their Sacramento apartment days earlier, then locked her in a closet to die. But this wasn’t the first horrific crime she’d committed against her own children.

The previous summer, Knorr had shot S...