Last year, The Mentalist was the top-rated new show on television.

Heading into the fall season, CBS hopes that NCIS: Los Angeles can replicate that feat, as its two main stars - Chris O'Donnell and LL Cool J - made their debuts on an episode of NCIS last season.

The network has released promotional posters for each of these dramas:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.