Detectives have a long list of "persons of interest" in the fatal ambush attack on a gorgeous Pennsylvania school teacher. Rachel DelTondo was standing in her mom's driveway when she was gunned down on Mother's Day. Nancy Grace updates this complex mystery with lawyer and psychologist Dr. Brian Russell, Southern California prosecutor Wendy Patrick, Atlanta juvenile judge and lawyer Ashley Willcott, and reporter Larry Meagher. Reporter John Lemley joins Grace to discuss an Oklahoma woman who allegedly tried to kill her daughters, including one who was stabbed dozens of times. Taheerah Ahmad, 39, reportedly said she was angry over how the girls looked at her.

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