Jeffrey Wright in “Hold the Dark” (Netflix)

The first trailer for “Hold the Dark,” the new thriller from “Green Room” director Jeremy Saulnier, is very dark indeed.

Jeffrey Wright (“Westworld”) stars as a wolf expert who’s hired by a woman after her six-year-old son disappears. She thinks he might be the latest child to fall prey to wolves in the Alaskan wilderness. Or is something much more sinister going on?

As in Taylor Sheridan’s “Wind River,” the trailer suggests that man is more dangerous than any wild animal.

Saulnier recently spoke to IndieWire about the film, which involved shooting in Canada and Morocco.

“There’s a lot of outback Alaskan landscapes. There’s aerial sequences. We’re dealing with bison and lynxes and wolves and all kinds of creatures. That was great to not build a contained environment and really milk it for all it’s worth like I did in ‘Green Room,’ but really bend my will around the landscape and the needs of the animals and to keep it very grounded and realistic, and not indulge in artificiality and exactly what I wanted every time.”

Saulnier previously worked with pit bulls who had to play “vicious attack dogs” in 2015’s “Green Room.” He told EW, “I was bracing for it to be the most difficult part of the shoot,” but raved about how professional the dogs were. Once again, he said working with animals was far easier than he expected:

“The things that I feared the most did not come into play. It was basically, you hear about harsh conditions and animals and that being tough, and pyrotechnics and blowing up a whole village or whatever it was, but those were easy because you’re so scared going in that you over-prep. They seem like a piece of cake compared to everything else.”

Alexander Skarsgård, James Badge Dale, Riley Keough, and Julian Black Antelope costar in “Hold the Dark,” which premieres at the Toronto International Film Festival and will begin streaming on Netflix on September 28. It’s based on the novel of the same name by William Giraldi.

Watch the trailer: