The music playing while Irina is dancing to death in the cursed shoes is from Princess Odette's death in the "Swan Lake" ballet.
When Dean is mesmerized by the ballet shoes Sam calls him Baryshnikov. Mikhail Nikolaevich Baryshnikov is a Russian-American dancer and choreographer. He is often cited as one of the greatest ballet dancers in history.
At the coffee kiosk Sam orders a triple red eye, the same drink he ordered as a child in The Girl Next Door (2011).
The name given for the person who bought the 'gentleman's magazine' was "Peter Yanket", who just so happens to live at 27 Johnson Lane.