The Spectre (2010) is the second of four DC Showcase films on a DVD titled Superman/Shazam: The Return of Black Adam. The plot centers around a spirit serving a human detective by day and transforming into a vigilante by night. When a famous actor dies, both the detective and The Spectre take on the case.
Directed by Joaquim Dos Santos (Spiderman: Across the Spiderverse), the film features the voices of Gary Cole (Talladega Nights: The Ballad of Ricky Bobby), Alyssa Milano (Commando), Robert Paulsen (Pinky and the Brain), and Jon Polito (The Crow).
This easily stands out as my favorite short story in this DC Showcase collection. The film's grindhouse feel and creepy horror elements are amazing and are complemented by an impressive storyline filled with enjoyable twists and turns. There's a Constantine vibe to this, and this short could have easily expanded into a full-length feature film. I'd give it an 8/10 and strongly recommend it.