‘Ironbark,’ Benedict Cumberbatch’s Cuban Missile Crisis film, has a quality crisis
(New York Post Movies)

PARK CITY, Utah - Benedict Cumberbatch´s latest has all the trappings of a great film: a piece of history few people know about, a chance for a physically transformative bit of acting and, you know, Benedict Cumberbatch. So, why is it so mediocre? `Ironbark,` which premiered Friday at the Sundance Film Festival, is a story...