Stephanie March Stephanie March

Get ready to meet the missing Kerkovich sister!

Stephanie March has been cast as Brooke Kerkovich, Jane (Eliza Coupe) and Alex's (Elisha Cuthbert) sister we have yet to meet on Happy Endings, has learned. 

Check out our complete pilot report

The Law & Order: SVU alum will first appear in an episode slated for spring, in which she'll out-Jane Jane, according to, who first reported the news.

Happy Endings heads to Fridays beginning March 29.