The Devil's Daffodil

The Devil's Daffodil (also known as Daffodil Killer or Das Geheimnis der gelben Narzissen/ Secret of the Yellow Daffodils) is a 1961 British-West German black-and-white crime film directed by Ákos Ráthonyi. The film was produced in an English and a German version, starring different actors in the lead roles but otherwise featuring an almost identical cast and crew. It starred William Lucas in the English version and Joachim Fuchsberger in the German one.

Production
The film is based on the novel The Daffodil Mystery by Edgar Wallace. It was adapted for film by Egon Eis. The screenplay was written by Basil Dawson and Donald Taylor. The German dialogue was written by Horst Wendlandt and. Wendlandt was also co-producer along with Preben Philipsen (both of Rialto Film).

Cinematography took place in April and May 1961 in London and environments. The studio was Shepperton Studios/Middlesex.

Reception
In Germany, the FSK gave the film a rating of "16 and up" and found it not appropriate for screenings on public holidays. The German version premiered on 21 July 1961.