From 2002 to 2006, Denis Cherevichnik collected material for a book about the secret male military societies.- worked in archives, and studied the trials of werewolves in Livonia and Courland in XVI-XVIII centuries. On the basis of studies in 2006-2007 in the Latvian magazine “Patron” was published an interview entitled “In search of a Werewolfland”. In 2008, these studies have attracted the attention of the Latvian television. As a result of ethnographic expedition there was a film “The Werewolf” from the popular Reality TV series – “The Legeng Hunters”.