The new biopic stars Timothée Chalamet as the musical genius, but it’s less about him than about his effect on others.

Dylan, a Nobel Prize winning poet, songwriter and performer, also ranks among the most enigmatic. Mangold chronicles Dylan’s Greenwich Village roots, performing in basement coffee houses, recording, forming a romantic and professional partnership with folk singer activist Joan Baez.

The filmmakers of “A Complete Unknown” were faced with a daunting task, our critic writes: How do you get behind the mask of a willfully enigmatic artist like Bob Dylan?