Jack Unterweger

Self (archive footage)

David O'Brien

Narrator (voice)

John Leake

Self - Biographer

Bianca Mrak

Self - Jack's Girlfriend

Günther Nenning

Self - Journalist

Gregg McCrary

Self - FBI Profiler

Max Edelbacher

Self - Criminal Investigator

Ernst Geiger

Self - Criminal Investigator

Willi Hengstler

Self - Filmmaker

Hans Lehofer

Self - Defense Attorney

Jon Siskel