Complex sentence: John Carpenter's "Apocalypse Trilogy" are a thematic film trilogy, consisting of 1982's "The Thing", 1987's "Prince of Darkness" and 1995's "In the Mouth of Madness".
Split into simpler sentences: John Carpenter's "Apocalypse Trilogy" are a thematic film trilogy. The three films are 1982's "The Thing", 1987's "Prince of Darkness" and 1995's "In the Mouth of Madness".