This is a very good episode of this influential, but short, series that has our "hero" tracking down a killer, played in fine form by Richard Kiel. This original motive has the "Diablero" stealing rich women's jewels and murdering them, while disguising himself as a crow or coyote, and I have to admit that the animal scenes weren't corny, but effective, especially the coyote's creepy growl. There is one scene, however, that should've been edited, because the "dead" police dog accidentally moved an ear after Kolchak takes a picture of it, and while it was a cute moment to the observant viewer, it obviously wasn't intended to be that way, and it takes away from the horror at that moment. Some familiar faces include Alice Ghostley, Victor Jory, Marvin Kaplan, and Ramon Bieri, who has a knack of playing police detectives during his acting career, and each added to the story, as well as the regulars on the show. As another reviewer mentioned, the chanting that the killer utters on the dark floor of the desolate building is quite creepy, although I felt the conclusion was a bit rushed, and too convenient for Kolchak to figure things out. All of that said, this was still a fine episode with good writing and performances, but not the best in the stable.