The phrase "tatort was ihr nicht seht" refers to a 2023 episode of the German crime television series Tatort titled "Was ihr nicht seht." In this episode, a young woman named Sarah Monet wakes up blood-covered next to her murdered boyfriend but cannot remember killing him, as her memory has been impaired by KO drops in her blood. The investigation unfolds with a complex plot involving memory loss, a potential serial offender, and the personal turmoil of the investigators, especially Leonie Winkler who believes in Sarah's innocence and pursues the case beyond official procedures. The episode highlights dark themes such as trauma, memory, and the psychological impact of violent crimes, with notable intense scenes involving fragmented flashbacks and suspenseful thriller elements.

This Tatort episode is the 1249th in the series and originally aired on MDR television. It is praised for its atmospheric suspense and emotionally charged scenes but criticized for lacking depth in exploring the perpetrator’s motives due to a fast-paced second half. The story combines crime investigation with personal drama, including the struggle of coping with trauma and the search for truth behind a complex crime scene.

"Was ihr nicht seht" translates to "What You Do Not See" in English, emphasizing the hidden layers of truth beneath the surface of the crime and the obscured memories of the protagonist. The episode also features elements of a thriller and psychological drama and is notable for the interplay between official police work and individual emotional involvement.