If you have a tween girl in the house, you're probably aware of at least a few shows airing on ABC Family -- 'The Secret Life of the American Teenager,' 'Make It or Break It,' and '10 Things I Hate About You' spring to mind.

The network has a new show premiering June 8 that looks to grab some of that audience. 'Pretty Little Liars' sounds like a cross between 'The Sisterhood of the Traveling Pants,' 'Desperate Housewives,' and 'Gossip Girl.' But it also looks pretty good. Here are four reasons why this show will be a hit.

Three new network series, Backyards and Bullets, Cavemen and Bionic Woman, have brought new cast members on board.

NBC's Backyards and Bullets, formerly called The Watch, has added Kristin Lehman. Lehman will play the wife of a detective, a man who leads a neighborhood watch group that falls apart. Lehman's previous credits include Judging Amy, Drive and Prison Break.