Following another mini hiatus (due to America's birthday), Rookie Blue Season 4 resumes on Thursday with "The Kids Are Not Alright."

Look for Swarek, Oliver and Chris to be on the trail of a gunman during the episode, one who shot a teenager that may have had connections to a gang.

And also look for Andy and Gail to end up involved in a messy tale of love gone very, very (VERY) after a routine traffic stop results in an unexpected discovery. Of what?

Watch the official Rookie Blue promo for the installment and then get your first look at it via the following sneak peek:

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