Factual error: Jeweler Albert Harrad calls Laura from his desk phone, but only punches six buttons before getting hold of her office. All U.S. phone numbers have seven digits: six wouldn't have connected him to anything. (00:37:30)
Factual error: During "Jester Balowski's Medieval Torture Hour," Balowski grabs the guys arm and bends it the way arms are supposed to bend, yet you hear a breaking noise.
4 Rms Ocn Vu - S3-E8
Factual error: Some of the visitors came to the Keaton "hotel" (their house) for the "ocean view." This takes place in central Ohio (near Columbus). There are no oceans around there.
Factual error: There is an intercom system in the library that is used by Derek (and at the end, Edward). They try pushing down the buttons to talk (which is normal for intercoms), but then each time, we are hearing Ricky and his grandfather's conversation from inside the car that's outside without using the intercom connected to the house. In the 80s, a house intercom system would not pick up a conversation in a parked car outside.