Rookie Blue: Scoop on Eric Johnson's involvement with the show in season 4 from TVLine's Matt Webb Mitovich

Here's some scoop on Rookie Blue from TVLine's Matt Webb Mitovich's weekly column Matt's Inside Line for the week of 5/30/13. 

Rookie Blue is back!!! And I can’t even begin to describe how excited I am!! I’m wondering if Luke is going to be a part of this season at all, or have they totally phased his character out? — Allison
Luke (played by Eric Johnson) will definitely be back for a few big episodes this season — including an intense mid-season case featuring one of the ABC drama’s past (and most dangerous) villains.

Link to the full article:Matt’s Inside Line on NCIS, True Blood, Once, Revolution, Rookie Blue, Burn Notice and More - TVLine