An investigation into laboratory research on animals exposes a hidden world in which it’s not just the animals getting hurt. The story of Dr. Lisa Jones Engel, a primatologist turned animal welfare advocate, asks whether harming animals and ourselves in science’s name is justified.

Animal testing, specifically on primates, has long been controversial, but its supposed necessity for medical breakthroughs has made many in the medical community and general public accept it. Sentient questions this assumption with an open mind and deep research, drawing on evidence and testimony from people on the front lines of animal experimentation around the world, some of whom have been traumatized by what they’ve seen and done. With disturbing footage from highly secretive laboratories and a rigorous approach that includes conflicting voices, a complicated portrait of the efficacy of animal testing for the betterment of humankind emerges. Director Tony Jones asks us to consider, with great empathy to animals and humans alike: While we might have a need to test on animals, do we have a right? — SS

This film contains mature content and is not recommended for audiences 17 and under.

Available in person. Also available online for the public (January 29–February 1) and credentialed press and industry (January 28–February 1).