Shadow has been cast over country music's biggest night: Juliette discovers a letter from Jolene revealing her mother's true feelings; Rayna and Deacon's fairytale evening at the CMA Awards, even performing with Brad Paisley - who guest stars as himself -- may not end in a happily-ever-after; and Gunnar will do whatever it takes to win Scarlett's heart back -- but is it too late? Meanwhile the U.S. Attorney's office is closing in on Teddy, and Peggy returns with a secret of her own.