![Katie Cassidy](http://image.tmdb.org/t/p/w92/9ktOBo6b71G86u80znuFuIfrLRM.jpg)
![Helen Siff](http://i.imgur.com/5KSMtMH.jpg)
Movies of Katie Cassidy and Helen Siff together
Katie Cassidy and Helen Siff have starred in 1 movie together. Their first film was The Lost in 2006..
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2006
![The Lost](http://i.imgur.com/4UkcE9T.jpg)
The Lost
Use the timeline above to view all the movies that Katie Cassidy and Helen Siff have starred in together. You can use the arrows or the arrow keys on your keyboard to slide from left-to-right along the timeline. If you have a touch device, you can slide left-to-right as well.
Select a movie to view who Katie Cassidy and Helen Siff starred as in that film.
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