Allegiance 1×05 “Tipping Point” – Alex (Gavin Stenhouse) is confronted with the reality of his family’s past just as his integrity is questioned at work. The FBI suspects a mole in the organization and brings in Special Agent Faber (Paul Ben-Victor) to investigate. Faced with testifying under oath and submitting to a polygraph test, Alex must for the first time fight against his own moral standards. Meanwhile, Victor (Morgan Spector) finds a new way to keep tabs on the O’Connors, and Natalie (Margarita Levieva) makes a critical mistake while tracking down a lead. Also starring Hope Davis (Katya O’Connor), Scott Cohen (Mark O’Connor), Kenneth Choi (Sam Luttrell) and Alex Peters (Sarah O’Connor). Guest starring Floriana Lima (Michelle Prado), Robert John Burke (Special Agent Brock), David Vadim (Rezident) and Haaz Sleiman (Scott Tolliver).