TV series
His first case in the CIA... his own family.
Alex O'Connor, a young idealistic CIA analyst specializing in Russian affairs, learns a shocking secret and his close-knit, affluent family is about to be split apart when it's revealed that his parents, Mark and Katya, are covert Russian spies deactivated decades ago. But today the Kremlin has re-enlisted them into service as they plan a terrorist operation inside the U.S. border that will bring America to its knees.
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Checked Jul 22, 2026
Alex O'Connor, a young idealistic CIA analyst specializing in Russian affairs, learns a shocking secret and his close-knit, affluent family is about to be split apart when it's revealed that his parents, Mark and Katya, are covert Russian spies deactivated decades ago. But today the Kremlin has re-enlisted them into service as they plan a terrorist operation inside the U.S. border that will bring America to its knees.
Cast, crew and production details
Hope DavisKatya O'Connor
Scott CohenMark O'Connor
Margarita LevievaNatalie O'Connor
Gavin StenhouseAlex O'Connor
Morgan SpectorVictor Dobrynin
Kenneth ChoiSam Luttrell
Alexandra PetersSarah O'Connor
Annie IlonzehJulia Marcus
NBCUnited States
Keshet InternationalIsrael
Universal TelevisionUnited States
yesIsraelWatch options above are for the show and may vary by season or episode.
Episode 1
A CIA rookie gets his first case and unknowingly investigates his parents, who are part of a Russian sleeper cell.
Guest stars Annie Ilonzeh, Mick O'Rourke, Sofiya Akilova, Patricia Kalember, David Vadim, Fred Thompson, Roman Roytberg, Carole Demas
Where to watch Allegiance
Episode 2
Katya manipulates Alex and makes him think he's mistaken when he almost exposes his parents as spies, but her lies lead to a rift in the family. Meanwhile, Victor is warned to keep the O'Connors under control and Alex teams up with an FBI agent.
Guest stars Floriana Lima, Robert John Burke, Pasha D. Lychnikoff, David Vadim, Roman Roytberg, Boris McGiver, Ilia Volok, Jakob von Eichel
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Episode 3
In the aftermath of a violent shootout, Alex must convince the FBI to risk a dangerous covert operation to find Mikhail’s hidden cache. Meanwhile, Katya discovers one of Natalie’s most dangerous secrets, and forces her to choose between love and family.
Guest stars Patricia Kalember, Floriana Lima, Robert John Burke, Pasha D. Lychnikoff, David Vadim, Fred Thompson, Ned Van Zandt, Laurie Williams
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Episode 4
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.
Guest stars Floriana Lima, David Vadim, Fred Thompson, Randall Batinkoff, Billy Calder, Roman Roytberg, Ivan Goris, Howard W. Overshown
Where to watch Allegiance
Episode 5
The FBI think they have a mole, so an investigation gets underway, and it puts Alex at war with his own ethics. Elsewhere, Victor devises a new method for staying on top of the O'Connors and Natalie makes a grievous error while searching for a lead.
Guest stars Floriana Lima, Robert John Burke, David Vadim, Billy Calder, Paul Ben-Victor, Haaz Sleiman, Alan Cappelli Goetz, Izzy Ruiz
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Episode 6
Natalie relies on an outsider to obtain crucial info for her. Meanwhile, Sam and Alex make a dangerous move to detain an SVR source and Katya implores Alex to give her some breathing room with the task force, which leads Alex to confront Victor.
Guest stars Floriana Lima, Robert John Burke, Haaz Sleiman, Natalia Kiriya, Aleksander Mici, Howard W. Overshown, Bette Kouri, Mia Vallet
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Episode 7
The O'Connors send the task force on a wild goose chase to Italy, while Alex tracks down the Black Dagger triggerman.
Guest stars Floriana Lima, David Vadim, Francesco Martino, Hassani Shapi, Giancarlo Esposito, Filippo Arnese, Alan Cappelli Goetz, Chiara Centioni
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Episode 8
Victor spies on the Rezident, Alex reveals a big secret to Michelle, and Sam grows increasingly suspicious of the boy genius.
Guest stars Floriana Lima, Robert John Burke, David Vadim, Roman Roytberg, Paul Ben-Victor, Giancarlo Esposito, Arthur Darbinyan, Kendrick Merdani
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Episode 9
Michelle's shooting puts Alex at odds with the task force. The Black Dagger triggerman makes his next move.
Guest stars Floriana Lima, David Vadim, Paul Ben-Victor, Giancarlo Esposito, Matthew Humphreys, Leslie Silva, Chester Jones III, Lorrie Odom
Where to watch Allegiance
Episode 10
Wanted in connection to Michelle's disappearance, Alex accepts help from an unlikely ally. Natalie and Victor adjust to life on the run.
Guest stars Robert John Burke, David Vadim, Roman Roytberg, Paul Ben-Victor, Giancarlo Esposito, Mike Dopud, Anna Lise Jensen
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Episode 11
The whole O'Connor clan go on the run, trying to escape both the FBI and the SVR while also plotting to expose Faber as the FBI mole.
Guest stars Robert John Burke, David Vadim, Paul Ben-Victor, Giancarlo Esposito, Anna Lise Jensen, Diane Farr, Brian Smyj, Andrea Sooch
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Episode 12
Sam and Alex join forces to find Oscar Christoph. Victor plots to take down the Rezident.
Guest stars Robert John Burke, David Vadim, Billy Calder, Roman Roytberg, Aleksander Mici, Boris McGiver, Giancarlo Esposito, Diane Farr
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Episode 13
With time running out, the O'Connors race to stop Black Dagger. Victor faces off with the Rezident. Natalie and Sarah must outsmart SVR agents to stay alive.
Guest stars Giancarlo Esposito, Pun Bandhu, Catherine A. Callahan, Ed Moran, Jesse VanDerveer
Where to watch AllegianceEpisode information updated Jul 22, 2026
