Justin Theroux flashes grin as he throws himself into character while filming horror movie False Positive with co-star Pierce Brosnan
He's filming the new horror movie False Positive.
But Justin Theroux sure looked happy while shooting the chilling flick in New York City on Monday.
The actor, 47, flashed a brilliant smile as he filmed a scene which saw him hailing a cab.
![Who's afraid? Justin Theroux sure looked happy while shooting the horror flick False Positive in New York City on Monday](http://web.archive.org./web/20190422211737/https://i.dailymail.co.uk/1s/2019/04/22/18/12581198-0-image-a-43_1555955076324.jpg)
Who's afraid? Justin Theroux sure looked happy while shooting the horror flick False Positive in New York City on Monday
Justin carried around a black duffel bag as he waited on the curb of the sidewalk before walking towards the cab.
Though the actor was smiling at one pointed, he shifted gears into a more serious demeanor.
Justin wore a black jacket, jeans, smart suede shoes, along with a handsome slicked back hairdo.
Elsewhere, co-star Pierce Brosnan was seen making his way through the set wearing jeans, a blue sweatshirt, and leather shoes.
![Look who's here! Pierce Brosnan was also spotted on the set of the creepy film](http://web.archive.org./web/20190422211737/https://i.dailymail.co.uk/1s/2019/04/22/18/12581186-0-image-m-49_1555955119206.jpg)
![Throwing himself into character: False Positive boasts an all-star cast including Sophia Bush, Broad City star Ilana Glazer and of course Justin and Pierce](http://web.archive.org./web/20190422211737/https://i.dailymail.co.uk/1s/2019/04/22/18/12581184-0-image-a-50_1555955126337.jpg)
Look who's here! Pierce Brosnan was also spotted on the set of the creepy film
The actor appeared deep in thought as he prepared to shoot scenes with Justin.
False Positive boasts an all-star cast including Sophia Bush, Broad City star Ilana Glazer and of course Justin and Pierce.
The film tells the story of a husband (Justin Theroux) and a wife (Glazer) who seek the help of a fertility doctor (Pierce Brosnan) to get pregnant.
![Taxi! The actor waited on the curb of the sidewalk, duffel bag in hand](http://web.archive.org./web/20190422211737/https://i.dailymail.co.uk/1s/2019/04/22/18/12581180-0-image-a-51_1555955130865.jpg)
Taxi! The actor waited on the curb of the sidewalk, duffel bag in hand
However, the evil medical expert manipulates the couple into getting them to use his own sperm to impregnate the wife, according to Collider.
The American horror movie that has been likened to a contemporary take on classic flick Rosemary's Baby, according to Production Weekly.
Collider noted the plot mirrors the chilling true story of Donald Cline who used his own sperm to get 48 unwitting women pregnant through the 1970s and 1980s.
![Lights, camera, action: The actor appeared deep in thought as he prepared to shoot scenes with Justin](http://web.archive.org./web/20190422211737/https://i.dailymail.co.uk/1s/2019/04/22/21/12581172-6947933-Lights_camera_action_The_actor_appeared_deep_in_thought_as_he_pr-a-12_1555964791185.jpg)
Lights, camera, action: The actor appeared deep in thought as he prepared to shoot scenes with Justin
Cline was convicted of lying about the inseminations in December 2017.
DNA tests from services including 23andMe and Ancestry.com confirmed at least 48 children that were fathered by Cline.
The number could likely be much higher considering the number of people who haven't ever done DNA tests.
![Who was the girl? The single star has been back in the news lately after he was spotted out with a mystery woman in New York City](http://web.archive.org./web/20190422211737/https://i.dailymail.co.uk/1s/2019/04/22/21/12581194-6947933-Who_was_the_girl_The_single_star_has_been_back_in_the_news_latel-a-11_1555964791051.jpg)
Who was the girl? The single star has been back in the news lately after he was spotted out with a mystery woman in New York City
Justin has been back in the news lately after he was spotted out with a mystery woman in New York City.
Justin has remained friendly with his ex wife Jennifer Aniston, and back in February even wished her a happy 50th birthday on Instagram.
'Happy Birthday to this fierce Woman,' he wrote, sharing a black and white image of Jennifer holding a set of bull horns over her head.
The Leftovers star continued: 'Fiercely loving. Fiercely kind. ....and fiercely funny. ❤️ you B.'
The couple were married for two years, splitting in 2017.
!['Fiercely loving, Fiercely kind': Justin has remained friendly with his ex wife Jennifer Aniston, and back in February even wished her a happy 50th birthday on Instagram](http://web.archive.org./web/20190422211737/https://i.dailymail.co.uk/1s/2019/04/22/21/12582224-6947933-_Fiercely_loving_Fiercely_kind_Justin_has_remained_friendly_with-a-10_1555964791050.jpg)
'Fiercely loving, Fiercely kind': Justin has remained friendly with his ex wife Jennifer Aniston, and back in February even wished her a happy 50th birthday on Instagram
- Ilana Glazer, Justin Theroux, Pierce Brosnan to Star in False Positive | Collider
- Production Weekly on Twitter: "Principal photography is due to get underway this spring on A24's FALSE POSITIVE, described as a contemporary take on Rosemary's Baby, written and starring Ilana Glazer.… https://t.co/7OMkXTOi98"