After taking a couple weeks off for the NCAA Tournament, CSI returns on March 31 with a new episode.

But we have April 7 circled on our calendar. That will mark the return of Melinda Clarke as Lady Heather, as the Nikita star returns to CBS for a week on "Unleashed."

Look for Langston and Sara to turn to this character on that episode for help in tracking down their latest culprit. Below, we've posted a few photos of Clarke making her entertaining return. Click on each to enlarge...