On Breaking Pointe (8 p.m., CW/Ch. 30); Adam makes a decision about Rex's role in Ballet West's next production; Allison makes a big decision about leaving Ballet West, but then Adam give her some unexpected news.There's trouble in the Christiana-Chris marriage; and Ronnie, Rex, Chris and Joshua decide to have a guys' night out.And the beat goes on ...Elsewhere on TV ...CMA Music Festival: Country's Night to Rock (7 p.m., ABC/Ch. 4): Highlights of the four-day event.American Ninja Warrior (7 p.m., NBC/Ch. 5): The Miami finals.Major Crimes (7 and 9 p.m., TNT): A teenage prostitute is murdered.Get Out Alive with Bear Grylls (8 p.m., NBC/Ch. 5): The teams must join forces to rappel down a cliff/King & Maxwell (8 and 10 p.m., TNT): Michelle considers returning to the Secret Service. (Season finale)Under the Dome (9 p.m., CBS/Ch. 2): Junior learns the truth about his mother's death.Siberia (9 p.m., NBC/Ch. 5): A radio tower beacon appears.Switched at Birth (9 and 11 p.m., ABC Family): There are problems at the bachelore party and the bachelorette party.The Glades (10 p.m., A&E): A Civil War reenactment ends in murder.Longmire (11 p.m., A&E): A game warden is murdered.Teen Wolf (11 p.m., MTV): Scott faces a difficult decision as he tries to save his friends and family.