Enver Gjokaj will have a few lessons to teach on Rizzoli & Isles Season 5.

The actor (Vegas, The Walking Dead, Witches of East End) will appear on multiple episodes of this TNT drama this summer, coming on board as a Boston University professor named Jack Keystone.

According to TV Line, the character will interact with Angie Harmon’s Jane and Sasha Alexander’s Maura in an “exciting” manner, coming across the latter when she’s readying  a lecture for her new seminar.

He's described as charming, funny and intelligent.

Rizzoli & Isles returns with new episodes on Tuesday, June 17 at 9/8c.

You can always watch Rizzoli & Isles online via TV Fanatic in order to catch up before then.

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