I was about halfway through this SyFy movie-of-the-week horror film that I found on Amazon Prime, when it finally struck me: this is almost exactly like Event Horizon.
Let me recount the similarities that I noticed: 1) Vessel disappears, then returns years later. 2) Ship supposedly traveled outside the boundary of reality, theorized to be "Hell." 3) The ship is possessed of an evil presence that terrorizes and kills the crew with their own fears. 4) Ship winds up getting dragged back into "Hell." 5) One of the characters has a personal stake in the ship.
Let me recount the similarities that I noticed: 1) Vessel disappears, then returns years later. 2) Ship supposedly traveled outside the boundary of reality, theorized to be "Hell." 3) The ship is possessed of an evil presence that terrorizes and kills the crew with their own fears. 4) Ship winds up getting dragged back into "Hell." 5) One of the characters has a personal stake in the ship.