It will be back to high school for Rizzoli & Isles on this week's episode of the fun TNT hit.

On tomorrow night's "Seventeen Ain't So Sweet," look for Jane and Maura to attend the former's reunion and be having a fun time... until it turns into a crime scene when a former classmate is found dead on the football field.

Elsewhere, Lolita Davidovich arrives as Korsak's ex-wife. And she has a business proposition. Watch the official preview now:

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