The only successful network show from last summer returns on June 23.

What will be in store for Andy and company on the second season of Rookie Blue? The following, official promo from ABC doesn't reveal much. But it does make it clear that the first-year-type adventures for the newbies on the force are far from over.

Check out the trailer now and visit TV Fanatic all summer long for in-depth reviews of every episode.

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