Bist O Yek (Twenty-One) is a 2026 Iranian crime-drama series directed by Behnam Behzadi, following a mysterious and complicated police investigation that grows darker the deeper it goes. With a cast led by Saeed Aghakhani, Behnaz Jafari, and Yekta Naser, each episode runs approximately 52 minutes.

What is Bist O Yek about?

When a complex criminal case lands on investigators' desks, what begins as procedure quickly turns into something far more layered. Bist O Yek builds its tension not through explosive revelations but through the slow accumulation of detail — contradictions in testimony, questions that multiply faster than answers, and the weight of lives shaped by having to fight for every inch. The series threads a quiet theme through its crime framework: women who have been forged, not broken, by difficult circumstances. The case unfolds across Drama, Crime, and Mystery registers, keeping the viewer oriented in atmosphere rather than shock.

About the cast

Behnam Behzadi, whose previous work has earned him recognition in Iranian cinema, directs all episodes. The ensemble includes Saeed Aghakhani and Mehdi Hosseininia alongside Yekta Naser and Behnaz Jafari — two familiar faces of contemporary Iranian film and television — with further performances from Shadi Mokhtari, Reza Behboudi, Bahare Kianafshar, and Nahid Moslemi.

Context & significance

Iranian serial crime-drama has developed a distinct voice over the past decade: slower-burning than its Western counterparts, more attentive to domestic pressure and moral ambiguity than to procedural mechanics. Bist O Yek sits in that tradition. For diaspora viewers who grew up watching Iranian television, or who want to stay connected to what is currently being produced in Iran, a 2026 crime series directed by a filmmaker of Behzadi's caliber is a meaningful entry point — watchable in the original Persian, without the distance a translation creates.

Watching Bist O Yek on Ktime

Bist O Yek streams on K-Time in its original Persian. No VPN is required — the service is available wherever you are, on web, TV, or phone. Start or cancel your membership at any time.