Audio/visual unsynchronized: In the teaser, Dr. Brennen says that the victim's (Ed's) "... teeth show evidence of a bit...", setting up a "Mr. Ed - a horse is a horse, of course, of course" joke, Dr. Hodgin's laughs but in the picture we see Dr. Hodgin's mouth is closed, and he's, clearly, not laughing.
Factual errors: 3:08: A birimbao is NOT a little flute; it is a one-stringed string instrument, somewhat like a guitar.