Terry English and Hildy Mulligan investigate the death of Erich Blunt's flight attendant, Cindy Strauss. Terry also attempts to deal with the recent death of his wife and the sudden arrival of her sister.

Terry and Hildy find themselves investigating people within their own department. Jamie digs into Dustin's past in an effort to better understand his actions. Meanwhile, Suger searches for answers as someone close to him disappears, then makes a shocking discovery.