After graduating from the Faculty of Journalism at Charles University in Prague at the beginning of the 1990s, Slánský has mainly devoted himself to news and reporting. From 1995 to 2008, he was the dramaturge for the investigative show Na Vlastní Oči on the TV channel Nova. In the year 2009, he as in charge of direction and dramaturgy for the Czech Television show Krotitelé Dluhů and directed the show Pološero in the year 2011 on the same channel. Slánský has been the creator of over 300 news reports for Reflex magazine and has worked as a dramaturge in over 1000 news reports, films and television shows.