Containment

After a deranged scientist releases a group of experimental creatures and commits suicide, a security guard loses his grip on reality. Atop unexplained hallucinations of a strange child and disembodied voices, the guard is faced with the challenge of deciphering his illusions from a dangerous reality. Consequently, he is quickly swept into a terrifying puzzle that will uncover his past, and shake the foundations of his future... (imdb)