Allegiance - Season 1 Episode 4 Chasing Ghosts
A surprising discovery leaves Alex reeling as he tries to adjust his theories in light of what he found at Philadelphia City Hall. Meanwhile, the Rezident questions Katya and Mark's dedication and Natalie discovers the dangers of Black Dagger.
- Genre: Drama
- Studio: NBC
- Keyword: spy, central intelligence agency (cia), undercover, kgb, russian spy
- Cast: Hope Davis, Scott Cohen, Margarita Levieva, Gavin Stenhouse, Morgan Spector, Kenneth Choi