Hungarian-born director, a former journalist. From 1930 he made films in his own country, as well as in Germany. In Hollywood from 1939, he turned out mostly routine low-budget features for Poverty Row companies like PRC, Monogram, Grand National and Eagle Lion. Did arguably his best work on a minor film noir,
Hollow Triumph (1948), and the cult sci-fi
The Day of the Triffids (1963) (although he had a British co-director on that one).