Under the Dome
Barbie gathers his courage when he heads into the mysterious tunnel to look for Sam in the new episode Going Home. What he finds is a world that's familiar to him, but leaves him with even more questions. CBS/Global, 9 p.m.
Catch up with Savi, Karen, April and Josslyn in this sizzling summer drama. In the new episode Charades, Toni's agenda becomes clear, creating difficult consequences for Dom and Savi. ABC/CTV, 9 p.m.
Running Wild with Bear Grylls
Actor Channing Tatum is the latest celebrity to try his hand at survival-style camping, accompanying Grylls on a harrowing two-day trek through Yosemite National Park in California. NBC/Global, 7 p.m.
George Stroumboulopoulos: Malcolm Gladwell
David Letterman: Dana Carvey, Ellie Kemper
Jimmy Fallon: Katie Holmes, Chris Hardwick
Craig Ferguson: Jim Gaffigan
Seth Meyers: Jeff Bridges, Riki Lindhome & Kate Micucci
Conan O'Brien: Will Arnett, Anna Camp