Just before they collaborated on the excellent thriller “Prisoners,’’ Jake Gyllenhaal played a dual role for director Denis Villeneuve in this murky, low-key and pretentious little Canadian film.

Mostly, Gyllenhaal is a soft-spoken history professor who by chance discovers a doppelgänger actor playing a bit part in a minor movie. He tracks down his more extroverted look-alike, whom we’ve already seen frequenting a sex club in an opening sequence that plays like David Lynch lite.

“Enemy’’ has them switching places, much to the confusion of the women in their lives (Mélanie Laurent and Sarah Gadon). But it doesn’t add up to much of anything exciting, even with an appearance by Isabella Rossellini (of Lynch’s “Blue Velvet’’) as the mother of one of the doubles.