El lado oscuro (2004) is a Thriller film that follows a novelist realizes that his works gradually begin to exceed reality into a world of the unknown and supernatural, creating in its viewers an atmosphere of terror and suspense. El lado oscuro is not currently listed with streaming providers in your selected region, but availability can change over time. It has a user rating of 5.3 out of 10 from 3 votes. Fans of thriller movies may also want to explore similar titles below.