Nanny McDead - S1-E2
Factual error: The establishing shot of the building where the murder takes place features on the foyer quite prominently "715 - The Langham." The story takes place in New York, but The Langham (named after the famous British hotel) is the name of a residential building in 715 S Normandie Avenue in Koreatown, Los Angeles, used in this episode. There is a hotel by that name in New York, not an apartment building, on 5th Avenue. (00:01:00)
Home Is Where the Heart Stops - S1-E7
Factual error: The shots of the West Side towards the end of the episode are reversed: you can see traffic on the West Side Highway moving in the wrong directions. (00:40:10)
Answer: The networks are now having winter breaks. A mid season end of new episodes, when they come back after the new year, it picks up as if several months have gone by. Beckett suggested Valentine's Day as a "chick flick" to watch as she is moved in. Also some episodes are not scheduled to air in order.