'Dexter' season 7 has just picked up a major new guest star in Yvonne Strahovski. It's a move that should be very exciting to fans of NBC's cult sci-fi comedy 'Chuck' but who exactly will she be playing?

According to The Hollywood Reporter, 'Dexter' season 7 has added Aussie actress Yvonne Strahovski to play "Hannah McKay, a strong, independent woman with a past that she's struggled to put behind her."  As a turn of events leads Miami Metro Homicide to ask for her help in solving some old cases, Dexter works with her and begins to wonder if there's more to Hannah than she claims.  If initial casting reports are to be believed, Strahovski's role has the possibility of recurring into the show's eighth, and final season as well.

Previously, it had been reported that 'Dexter' was seeking an actress for the role of "Hannah," but it had been assumed that the recent casting of Katia Winter in the recurring role of a stripper was the eventual result of that search.  'Chuck' us, this is much better!

In addition to Strahovski and Winter, 'Dexter' season 7 boasts some impressive talent, including ‘Luck‘ star Jason Gedrick  as an owner of a gentleman’s club, one which frequently plays host to fellow-cast (and likely major villain) Ray Stevenson, a “high-ranking member of an Eastern European crime ring who arrives in Miami determined to learn who killed one of his associates.”

Earlier today we saw the first official photo of Dexter and Deb from season 7 premiere "Are You...?" but what say you of Yvonne Strahovski?  Do you think the former 'Chuck' star will fit right in for 'Dexter's seventh season, set to premiere on Showtime Sunday, September 30?  Chuck us your theories on Strahovski's character "Hannah" in the comments below!