Season 4 Countdown - Sherlock/Suicide Squad AU: Dr. Molly Hooper is a psychiatric intern at Arkham Asylum. A model student with high grades in college. While researching the lunatics at Arkham, she becomes fascinated with one particular inmate. Ambitiously volunteering to analyze him, she pleads with the doctors for three months before she can treat him. After he gains her sympathy during their sessions, he seduces her, causing her to fall madly in love with him. She becomes Harley Quinn, the sidekick of the King of Crime himself.