Suzana S. Drobnjakovic Ponti (born May 17, 1973), known by her stage name Sasha Alexander, is a Serbian-American actress. She played the role of Gretchen Witter on Dawson's Creek and has acted in feature films including Yes Man (2008) and He's Just Not That Into You (2009). Alexander played former Secret Service/NCIS Special Agent Kate Todd for the first two seasons of NCIS. Since July 2010, Alexander has starred as Maura Isles in the TNT series Rizzoli & Isles.