Unbekannter rechnet ab, Ein was released in the year 1974。Unbekannter rechnet ab, Ein is also called as ...e poi non ne rimase nessuno, And Then There Were None, Deka mikroi Indianoi, Diez negritos, Dix petits nègres, En af os er morderen, Kymmenen pientä neekeripoikaa, Ten Little Indians, Thanatos stin Persepoli。

Updated version of the Agatha Christie book "And Then There Were None. In this version, the group is invited, under false pretenses, to an isolated hotel in the Iranian desert. After dinner, a cassette tape (voiced by the legendary Orson Welles) accuses them all of crimes that they have gotten away with. One by one they begin to die, in accordance to the Ten Little Indians Nursery rhyme. After a search is made of the hotel, they realize that the murderer is one of them. A few members of the group attempt to trust each other, but the question still remains, who can one trust? and who will leave the hotel alive?

Unbekannter rechnet ab, Ein actors and actresses include Charles Aznavour, Elke Sommer, Gert Fröbe, Orson Welles, Richard Attenborough。