Box office Copperhead opened in limited theatrical release June 28, 2013, playing in 59 theaters and was simultaneously released in video-on-demand platforms including
Amazon Video. The film ultimately grossed $171,740. On
Metacritic, which uses a
weighted average, the film has a score of 34 out of 100, based on 12 critics, indicating "generally unfavorable" reviews. Stephanie Merry of
The Washington Post gave the film two out of four stars, remarking, "The story offers uncommon insights on the endlessly parsed period in history, but its execution sometimes falls short. Both the production quality and the persistent, sentimental soundtrack create a made-for-TV feel." Mark Olsen of the
Los Angeles Times shared similar criticism, opining, "Where
Tony Kushner's screenplay for
Steven Spielberg's
Lincoln found energetic drama in political wrangling and historical events,
Copperhead crams far too much of its action into its last 30 minutes after a rambling, drawn-out set up. Painfully lugubrious, any sting
Copperhead might contain for its contrarian's view of history is undone by its wayward sense of storytelling." Christine N. Ziemba of
Paste magazine wrote
Copperhead a fairly mixed review, stating "Despite good performances throughout the film, the pacing of
Copperhead is slow, with many long takes and establishing shots that seem a bit over-indulgent, as if to remind viewers that they're watching an 'important, yet little-known, historical drama.'" Despite ultimately giving the movie a mixed review, John DeFore of
The Hollywood Reporter optimistically stated, "Theatrical prospects are meager..., but history buffs may appreciate its earnest look at an underexplored subject on small screens." ==Relation to director's previous works==