The Ghost of A. Chantz - S4-E3
Factual error: When Laura and Sally are about to go to the bedroom, Buddy and Rob are going to sleep in the living room of the haunted cabin. Rob and Laura tell Buddy and Sally things like how he steals the pillow and he takes all the covers at home. However at home, they sleep in twin beds so they shouldn't know such things. However, they do have a son. They had to share a bed at least once in their marriage.
Suggested correction: Or they sleep in twin beds because he steals the pillow and takes the covers when they tried sharing a double bed.
It's not true that Rob steals pillows... Because every episode Rob has only 2 pillows. Unless he steals them in the middle of the commercials... and then they vanish before the next scene.
Factual error: When Rob climbs up the elevator shaft, he comments on how greasy it is, and when he jumps back into the elevator, he wipes his hands on his shirt but not a bit of grease shows on his clean white shirt.
Your Home Sweet Home is My Home Sweet Home - S4-E25
Factual error: When Rob is on the phone with the Realtor guy they talk about what the Petrie's soon to be house will look like, what's in it, what won't be in it. Yet neither of the houses (Petries and Helpers) are the same in any of the episodes and none of the stuff that is mentioned in this episode are in any episode no sling chairs, no pine wood or panelling etc. The 2 houses are completely different.
Three Letters from One Wife - S4-E10
Factual error: Millie mails 14 letters to Alan Brady with names of dead relatives, and to give them different postmarks she says that she drove all over Westchester and southern Connecticut to mail them. The next day, all 14 have arrived. Mail crossing a state line would not likely have made it overnight.
