Review of Ein Unbekannter rechnet ab

I remember seeing Ten Little Indians (aka Ein Unbekannter rechnet ab) on the small screen (aka television) back in the 1980s I think, and it was quite entertaining fare. I had no idea it was filmed in the country where four years later hostages would be taken at the embassy, so there you go. Anyway, it's wonderful seeing the big name stars at the time, and also it happens that Ten Little Indians debuted two years before Dame Agatha Christie died, and also Peter Collinson, the director, tragically died young at the age of 44 in 1980 just after finishing directing The Earthling that starred William Holden.