Blue Bloods (2010)

S1E13 Hall of Mirrors

Danny delves into the case of an undercover counter-terrorism operative who was shot while working to expose a sleeper cell. As he unravels the tangled web of deception surrounding the agent's mission, Danny faces numerous challenges and dangerous leads that put him on a collision course with those who wish to keep their secrets hidden. The investigation pushes him to confront his own beliefs about loyalty and sacrifice in the line of duty.