Ben Kingsley and Emily Mortimer have joined Dan Fogler and Ewan McGregor in drama “Number Thirteen.” Chase Palmer penned the script and makes his helming debut.Union Square Entertainment’s Jason Berk and Matt Lane will produce with Gail Mutrux. Union Square is financing the film, which begins shooting in February. Fogler plays a young Alfred Hitchcock as he tried to make “Number Thirteen,” a first film he never completed. In the fictional storyline, the director becomes involved in his own Hitchcockian dilemma involving romance and murder. Pic is the first to be financed by Union Square, which will make the domestic and overseas distribution deals. Kingsley’s repped by CAA, Mortimer by WMA and Brillstein-Grey.