-Hope and Maura bond but Maura still can't understand how her mother could accept Paddy's money to fund her foundation.
-As Paddy's trial heats up, the main witness is killed.
-Further investigation uncovers that Paddy Doyle caused the gas leak in Lt. Cavanaugh's home 20 years ago. He was trying to kill Cavanugh but ended up killing his wife and 2 year old son instead.
-When Cavanaugh sets out to kill Paddy, the team tries to stop him, believing that Paddy will most likely go free. He lets Paddy live when Maura convinces her mother what an evil man Paddy truly is and she agrees to testify against him.