I Know Who You Are 2026

I Know Who You Are (2026) is a Chinese Mandarin-language drama directed by Feng Xiaogang, based on Zhang Ce’s novel No Regrets Tracking. Set shortly after the founding of the People’s Republic of China in 1949, the film follows Xiao Dali, a former soldier who becomes a local public security police chief and develops suspicions about elementary school teacher Feng Jingbo.

What begins as an investigation gradually becomes a decades-long pursuit as Xiao remains determined to uncover whether Feng is secretly working as a spy. With a 141-minute runtime and leading performances from Lei Jiayin, Hu Ge, and Liang Jie, the film combines historical drama with mystery and investigative tension. It was released in China on June 19, 2026, followed by a limited U.S. release in July.

Storyline & Plot Analysis

The I Know Who You Are storyline begins in 1949, during the early days of the People’s Republic of China. Xiao Dali enters the city and takes charge of a public security police station. His attention soon turns toward Feng Jingbo, a primary school teacher whose behavior raises questions in Xiao’s mind.

Convinced that Feng could be an undercover agent, Xiao decides to keep a close watch on him. Rather than resolving the mystery quickly, the investigation develops into a pursuit that stretches across nearly four decades. Xiao’s determination becomes a defining part of his life as political circumstances, personal relationships, and the passage of time continually reshape the meaning of his investigation.

The film’s central tension comes from uncertainty: is Xiao pursuing a genuine threat, or has suspicion become an obsession? That question gives the historical setting a strong personal dimension while allowing the story to examine loyalty, duty, suspicion, and perseverance.

Production Details & Behind-the-Scenes

Feng Xiaogang directed the movie from a screenplay credited to Jianquan Shi and Ce Zhang, with Zhang Ce’s novel No Regrets Tracking serving as the source material. The production companies include Alibaba Pictures Group and Damai Entertainment.

The film’s period setting is central to its visual identity. Rather than presenting the story as a conventional modern spy thriller, the filmmakers place the investigation within the social and political atmosphere of China in the years following 1949. The extended timeline also gives the production an opportunity to portray how the characters and their surroundings change over several decades.

With a runtime of 141 minutes, Feng Xiaogang gives the investigation room to develop gradually instead of treating the suspected espionage case as a short-form mystery.

Cast & Characters

The I Know Who You Are cast includes:

• Lei Jiayin as Xiao Dali – A former soldier who becomes a public security police chief and spends decades pursuing his suspicions.
• Hu Ge as Feng Jingbo – The elementary school teacher whose behavior causes Xiao to suspect him of being a spy.
• Liang Jie – A leading supporting performer in the historical drama.
• Yu Hewei
• Wu Jiang
• Zhang Sophie
• Zhang Yao
• Liu Peiqi

Lei Jiayin and Hu Ge form the central dramatic pairing, with the story depending heavily on the tension between Xiao’s unwavering suspicion and Feng’s uncertain position. The supporting ensemble helps expand the story beyond the central investigation as the characters move through changing historical circumstances.

Release Date & Box Office/Reception

I Know Who You Are was released in China on June 19, 2026. It later received a limited U.S. release on July 2, with some U.S. listings showing July 3 as the theatrical date.

The film has received a respectable audience response, with IMDb currently listing it at 7.1/10. Box Office Mojo reports approximately $16.33 million worldwide, with the overwhelming majority coming from its Chinese theatrical run.

Where to Watch I Know Who You Are

If you’re searching for where to watch I Know Who You Are, the film’s availability remains primarily theatrical in several international markets. Current listings indicate that it has been playing in cinemas in markets including the United States, Canada, Australia, and New Zealand, while a broad subscription-streaming release has not been confirmed.

For viewers looking for a home-streaming option, MUBI currently lists the film in its catalog information, but availability can depend on territory and licensing. Check your regional MUBI listing and local digital services before assuming the movie is available to stream.