After Effect is a 2013 horror-thriller film directed by David McElroy. The movie follows a group of college students who sign up for a paid research study. They are promised a good sum of money for only a few days of work. The study is conducted in an isolated facility with high-end amenities.
However, as the study progresses, the students start experiencing strange hallucinations and extreme paranoia. The researchers, led by Dr. Bjorn Gustavsen (played by William Baldwin), are unwilling to disclose any information about the experiment.
Things take a horrific turn when the students begin to exhibit violent behavior towards each other and the facility. They eventually learn that the study was part of a secret U.S. Military experiment, and they have unknowingly volunteered their bodies as human collateral.
The students' lives are now in danger, and they must try to survive the experiment and escape the facility. The movie is a blend of horror, thriller, and science fiction that will keep you on the edge of your seat.