Date: December 2nd 2015 Episode: 8 'Ten Commandments Killer'
After revealing to audiences and to Detective John Lowe himself who the Ten Commandments Killer is John begins to remember the past 5 years at the Hotel Cortez. For John to remember and for audiences to see the story, John flashes back to 2010 for his first visit at the Hotel Cortez. The flashback includes drinking at the hotel bar with Martinis from Liz Taylor (originally told to Sally in episode 2 without mentioning where the bar was) and a party invite from Donovan.
The "party upstairs" is where The Countess and Mr. March are having their once-a-month dinner but The Countess is excused for the month when James Patrick March realizes John can become his serial killer successor.
For the short but powerful scene Lady Gaga wore an archival piece from John Paul Gaultier. Lady Gaga's gown is look 41 in John Paul Gaultier's Haute Couture Fall/Winter 2014 collection, and is no longer available to purchase.