The stories featured are "The Fall of the House of Usher," narrated by Sir Christopher Lee; "The Tell-Tale Heart," narrated by Bela Lugosi; "The Facts in the Case of M. Valdemar," narrated by Julian Sands; "The Pit and the Pendulum," narrated by Guillermo del Toro; and "The Masque of the Red Death," which isn't narrated.
During "The Pit and the Pendulum" segment, the hole that forms in the floor of the narrator's cell is in the shape of the deadly blade pendulum.
Although it's not outrightly stated during the "Masque of the Red Death" segment, symptoms of the Red Death plague include sharp pains, dizziness and profuse bleeding from the pores, hence the name.
The narrator in "The Facts in the Case of M. Valdemar", while voiced by Julian Sands, is animated to be modeled after Vincent Price.