In one scene Tim comes into the kitchen and puts his shoes and coat on the counter. In the very next scene the coat is hanging on the railing instead.
When Tim's car flies off the the track it crashes through the glass in the patio door. This would not be possible, all glass in doors has been safety glass for more then 30 yrs. The glass in his door broke like plate glass, which would not be in a door.
Jill's mother says she has 5 daughters (including Jill), but 6 of Jill's sisters are mentioned in the series.