Kiele Sanchez has signed on to join the cast of Lost next season for ABC.

The Hollywood Reporter says Sanchez will play a new castaway and a potential love interest for Rodrigo Santoro; Elizabeth Mitchell has also been added to the third season of the hit drama series.

In other TV news, Kari Matchett will star opposite Treat Williams in the drama, Heartland for TNT. If the show gets picked up, look for it in the fall on the cable network.

Lost has begun shooting its third season in Hawaii; the premiere is on October 4th on ABC.