Actress Elizabeth Mitchell is joining the cast of 'Lost' for the third series of the award-winning show.
The Hollywood Reporter says that Mitchell will play a character called Juliet.
Sources have said Juliet could be a new love interest for Jack (Matthew Fox).
Mitchell played Dr Kim Legaspi on 'ER' in 2001 and her other TV credits include 'House', 'Boston Legal', 'CSI: Crime Scene Investigation' and 'Law & Order: Special Victims Unit'.
