Kimmo NokkonenSelf - Retired Police Detective Helinä Häkkänen-NyholmSelf - Profiler, PsyD Tuomas RimpiläinenSelf - Journalist & Author Juha RautaheimoSelf - Retired Police Detective Nanna Ripattila-TulikouraSelf - Producer / Producteur Elise PietarilaSelf - Podcaster / Executive Producer / Original Idea Aki LahtinenSelf - Officer in Charge of the Investigation, National Bureau of Investigation Jani PötrönenSelf - Hydrography Expert, Traficom Heikki LepoSelf - Retired Police Detective Petri LuukkainenSelf - Director / Director / Scénariste Harri MoisioSelf - Radio Reporter & Minfo Member Taru LaitinenSelf - Senior Detective Constable Matti TolvanenSelf - Professor Emeritus of Criminal Law Veli-Matti SoikkeliSelf - Police Detective Risto LohiSelf - Superintendent, Officer in Charge of the Investigation, National Bureau of Investigation Antti SuantoSelf - Amateur Searcher Markus HillbergSelf - Diving Enthusiast Teme ToivainenÄänimuutettu näyttelijä Kerttu MättöÄänimuutettu näyttelijä JaanaSelf - Mother of Niku Petri LuukkainenSelf - Director / Director / Scénariste Elise PietarilaSelf - Podcaster / Executive Producer / Original Idea Nanna Ripattila-TulikouraSelf - Producer / Producteur Markus FriskbergProduction Designer Ville TervonenProduction Designer Jussi MelingCinematographer Sakari SilvolaExecutive Producer: YLE Emma TauloCommissioner: YLE 
