(b. 1989) studied at the secondary school affiliated to the Academy of Arts, Architecture and Design in Prague. He continued his education at the Miroslav Ondříček Film Academy in Písek, specialising in audiovisual production. His short film Don’t Speak Too Soon (Neříkej hop, 2010) was nominated for a Magnesia Award in the student film category in 2010 and won numerous accolades at domestic festivals, including the Audience Award at the Filmmakers to Watch event organised by Nova TV. His next short film Mr. Late (Pan pozdě, 2011) was also nominated for a Magnesia Award and won Best Film and Best Screenplay at the International Student Festival in Písek, for which Sádek filmed the trailer the following year. His filmography to date includes another two shorts, Cave of Dogs (Psí jeskyně, 2012) and Quantum (2013). The Noonday Witch (2016) is his feature film debut.