Guest Stars John Nolan as John Greer Cara Buono as Martine Rousseau Julian Ovenden as Jeremy Lambert Oakes Fegley as Gabriel Alexie Gilmore as Rachel Farrow Michael Siberry as Blackwood Robert King as Brian Daniel Hepner as London Broker Trevor Zhou as Chinese Broker Emrhys Matthew Cooper as Young Greer Andrew Fitzsimons as London Stock Floor Manager Co Starring Roman Blat as Oleg Luski Rafael Poueriet as Swat Team Officer #1 Veronica Reyes-How as Arguing Girlfriend Daniel Keith as Isaac