This episode appears to be based on two different cases including:
- The 1993 Karisa Santiago case. In March 1993 Santiago, was a Yonkers woman accused of killing one of her three young children, who died mysteriously during an eight-month period. She had what appeared to have multiple-personality disorder.
- The 1975 Billy Milligan case. William Stanley Milligan was the subject of a highly publicized court case in Ohio in the late 1970s. After having committed several felonies including armed robbery, he was arrested for three rapes on the campus of Ohio State University. In the course of preparing his defense, psychologists diagnosed Milligan with multiple personality disorder. His lawyers pleaded insanity, claiming that two of his alternate personalities committed the crimes without Milligan being aware of it. He was the first person diagnosed with multiple personality disorder to raise such a defense, and the first acquitted of a major crime for this reason, instead spending a decade in mental hospitals.
Megan reveals her two other personalities three times; Bobby appears twice and Nancy once. We see the triggers the produce the personalities, but never see what happens after the personalities complete their roles. The scenes simply fade to black instead of showing how they revert to Megan.
It's established early on that Nancy hates a liar. On the stand during the competency hearing Dr. Cantrel accuses Megan of lying to get the Bobby personality to reveal himself. Yet the lying accusation should have triggered Nancy and not Bobby, who comes out on the stand.