Henning Bahs (12 March 1928 â 29 March 2002) was a Danish screenwriter and special effects designer. He wrote for more than 40 films between 1960 and 2002. He is best known as the co-author (with Erik Balling) of the Olsen-banden series of films. The Henning Bahs Award was established in 2012 by the Danish Film Critics Association in commemoration of Bahs' death ten years earlier.