Complex sentence: In February 2012, Brewster announced her departure from the show after the seventh season, and was replaced the following season by Jeanne Tripplehorn, who played Alex Blake, a linguistics expert.
Split into simpler sentences: In February 2012, Brewster announced her departure from the show after the seventh season. She was replaced in the eighth season by Jeanne Tripplehorn, who played Alex Blake, a linguistics expert.