When Sinclair goes to chase Andrea Barton he runs the wrong way to catch someone going out the window of her apartment.
Liz Warner is seen wearing a gold name necklace throughout the episode. When Liz and Colby are searching a house, it clearly doesn't say "Elizabeth" or "Warner" but appears to begin with an "S." Liz is played by Aya Sumika, so it is very likely to actually be her last name.