As the 50th anniversary of President John F. Kennedy’s assassination approaches, the mystery surrounding the murder has inspired another indie movie, as Tommy Alastra and Joe Mundo of 13th Sign Pictures have signed on to finance and produce “Dallas in Wonderland,” a conspiracy thriller that will be directed by Ryan Page (“Queens of Country”).Written by Page and Adam Parfrey, contemporary story follows a documentary filmmaker and his female producer who are hired by a major TV network to do a puff piece for their planned motorcade reenactment that will take place during a televised memorial ceremony. Finding themselves wrapped up in the network’s plot to prove that Lee Harvey Oswald acted alone, the duo close in on the central narrative surrounding one of history’s greatest murder mysteries, triggering the climax of JFK’s assassination to play out in front of a worldwide TV audience. “Adam Parfrey and I [have] crafted what feels to us like an altogether new kind of thriller, featuring the very latest research done in the JFK assassination case,” said Page, who will produce with Alastra and Mundo. “This story has not fully been told. It continues to evolve and is rife with the most interesting storylines and fascinating real-life personalities I worked with Joe and Tommy on previous films and when it came time to select our production partner for ‘Dallas in Wonderland,’ there was never even a debate.” The JFK assassination serves as the basis for writer-director Peter Landesman’s Playtone-produced indie “Parkland,” which will star Paul Giamatti as Abraham Zapruder, while director Jonathan Demme spent some time developing an adaptation of Stephen King’s novel “11/22/63,” though he let the project go when his option expired. 13th Sign Pictures, which is focused on telling original stories and will serve as a collaborative home for filmmakers, most recently produced the documentary “Sunset Strip,” which debuted at SXSW and will air on Showtime this spring. Parfrey owns and operates Feral House, which has been publishing innovative and celebrated non-fiction books since 1989. He also co-founded the new imprint Process Media. Page, who directed the Lizzy Caplan-Ron Livingston pic “Queens of Country,” is repped by WME and Untitled.