Benedict Cumberbatch stars in the trailer for Netflix's Western film The Power ...

Benedict Cumberbatch is back with what looks like one of his darkest roles to date in Jane Campion's upcoming film The Power Of The Dog.

The 45-year-old Academy Award nominee stars with Kirsten Dunst, Jesse Plemons and Kodi Smit-McPhee in a new trailer for the Netflix Western, which dropped on Thursday.

Cumberbatch stars as a Montana rancher in the 1920s who seems determined to terrorize his sister-in-law's son from a previous relationship after becoming enamored of him.

The trailer opens on picturesque hills soundtracked to the moody acoustic guitar from Radiohead guitarist Jonny Greenwood, who has established a second career as a film composer with his acclaimed scores for There Will Be Blood and Phantom Thread.

'Twenty-five years since our first run together. Nineteen hundred and nothing,' Cumberbatch muses as the rancher Phil Burbank to his brother George (Plemons).

'That's a long time,' George replies as they slowly ride horses alongside a herd of cattle.

Then George is seen taking his hat off to introduce himself to Rose Gordon (Dunst), a widow with a young adult son named Peter (Smit-McPhee).

'Whatcha doin', gettin' mixed up with her?' Phil asks suspiciously as George is seen in a bowler hat enjoying a cup of tea out on the hills with Rose. 

'You are marvelous, Rose,' George says as he embraces her.

'We were married Sunday,' he admits to a startled Phil in another scene. 

Then Phil is seen with a malicious sneer on his face as he gazes into the distance at Rose's gangly son Peter, who stands out from the other rugged ranchers with his clean white shirt and cream-colored hat.

Although Phil is attracted to Rose's son, he can't pursue his desires out of fear that he'll be shunned.