A high-ranking German officer who becomes infatuated with actress Natalija Zovkov. He inspects her stage performance, demands her release during a boat standoff, and visits the tortured Blacky in a hospital. He is ultimately strangled to death by Marko in front of Natalija.
Their opposition culminates in Franz's killing.
Marko enters the hospital through an underground sewer passage and strangles Franz to death with a cord.
Franz's attraction and Natalija's shifting loyalties create a volatile emotional bond.
Franz becomes infatuated with Natalija, demands her release during the boat standoff, and she runs to him before later switching sides.
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