When Penny Jackson was arrested for the murder of her husband, 78-year-old David Jackson, the world was stunned by her apparent lack of remorse and her concern that she may not have harmed him enough to kill him. The motivation was supposedly nothing more than an argument over her choice to serve bubble and squeak with the gourmet evening meal. How could this seemingly nondescript middle-class woman have transformed into a cold-blooded killer?In interviews with family members, friends, journalists, and experts this episode examines the case against Penny Jackson and her complicated past.