Delitto al Blue Gay, internationally released as Cop in Drag, is a 1984 Italian "poliziottesco"-comedy film directed by Bruno Corbucci.

It is the eleventh and final chapter in the Nico Giraldi film series starred by Tomas Milian.

A man who worked at the Blue Gay, a transvestite cabaret, is found murdered, strangled.

Marshal Nico Giraldi (Tomas Milian) is responsible for investigating the death by infiltrating in the Roman Gay community.

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