S5, E12: A mission takes Oliver Felicity and the team to Russia where they meet up with Oliver's old friend Anatoly (guest star DAVID NYKL). Meanwhile fresh out of rehab Quentin Lance returns to the Mayor's Office ready to get back to work. However when Susan (guest star CARLY POPE) asks for an interview with Lance to discuss his addiction he balks and it's up to Rene to help keep things on track.