D-Tox (2002)

'D-Tox' is a 2002 thriller film that follows an FBI agent, played by Sylvester Stallone, who checks into a remote detox clinic after witnessing a traumatic event. However, the clinic becomes a dangerous place when patients start turning up dead, and the isolated group must work together to uncover the identity of the killer. The film delves into themes of survival, trust, and redemption as the characters fight to stay alive while battling their inner demons.