Закон и Порядок. Отдел оперативных расследований S01E04 - Завершение дела (Completing the Case)

Absolutely rape. The detectives are sure that this is Igor Volkov, who was previously involved in a similar case - the same "handwriting" of the crime, but as then there is no way to prove Volkov's involvement. But this time the detectives won't just give up and punish the criminal.