The Night the Lights Went Out at Melrose - S7-E13
Revealing mistake: At Melrose, Ryan tells Michael the whole block is out of power, but their whole pool area is well lit from the camera crew.

Starring: Heather Locklear, Josie Bissett, Thomas Calabro, Andrew Shue
The Night the Lights Went Out at Melrose - S7-E13
Revealing mistake: At Melrose, Ryan tells Michael the whole block is out of power, but their whole pool area is well lit from the camera crew.
Framing of the Shrews - S3-E29
Factual error: Alison is in her office in Hong Kong and takes a telephone call from Brooke, calling from D&D in Los Angeles. It is daylight outside Alison's window and the office is busy around Brooke. There is a 15-hour time difference between Hong Kong and Los Angeles; it is not possible to have normal business hours in both locations at the same time. (00:14:00)
Nurse Amy: She's your wife's landlord. That would be your present wife, number four, isn't it? And she wants all your belongings out of the house by to-night.
Michael: And did she say why?
Nurse Amy: Nooo, but I'm sure we'll be reading about it in tomorrow morning's newspaper.