सी1, ए5: Mary’s world starts spinning out of control when Annie quits the business and Des decides to take Frank up on his offer to turn on Mary in exchange for leniency. After Jess finally calls Mary out on all her lies, she has a ‘dark night of the soul moment’ while tending to Morgan, the patient with cystic fibrosis. For the first time Mary questions her choices and confronts how much her mother’s death shaped her life.