Prime Minister Mateusz Morawiecki of Poland sent a sharply worded letter to Netflix on Sunday objecting to a map shown in the new documentary series, “The Devil Next Door,” arguing that it suggests that Poland was responsible for Nazi-run concentration camps.

The true-crime series, released last week, focuses on the case of John Demjanjuk, a retired autoworker from the Cleveland area who was put on trial in the 1980s after he was accused of being “Ivan the Terrible,” a notoriously cruel guard at Nazi-run camps. A map shown in the first episode depicts modern-day Polish boundaries, labeled “Poland,” with geographical markers for death camps such as Sobibor and Treblinka, sites where Demjanjuk is said to have worked. In the third episode, another map locates several death camps within Poland’s boundaries.

In his letter, Mr. Morawiecki did not say which map troubled him, though both use similar markings. He criticized the filmmakers for not clarifying that Poland was under German control during the period. He asked Netflix to either modify the map or somehow inform the audience of the “terrible mistake.”

“Not only is the map incorrect, but it deceives viewers into believing that Poland was responsible for establishing and maintaining these camps, and for committing the crimes therein,” Mr. Morawiecki wrote in the letter, addressed to Reed Hastings, the chief executive of Netflix, and posted on the prime minister’s Facebook page.