TV highlights: 'Catfish: The TV Show' returns

As if the physical demands weren't enough, the castaways now have to worry about their mental health on "Survivor" (CBS at 8 p.m.) after one finalist is stricken with paranoia. The Top 4 vocalists, which is made up of Jena Irene, Caleb Johnson, Jessica Meuse and Alex Preston, perform with the theme, "Love: Breakups and Make-Ups" on a live, two-hour "American Idol" (Fox at 8 p.m.).