How many movies have C. Steven Duncker and J. Christian Ingvordsen collaborated on?

They have worked on 5 movies together! Their first movie together was Firehouse (1987) and was their highest rated movie together. They have not worked together since Airboss IV: The X Factor (2000). They are most known for their action films together.

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Webb Buckley
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James Kelly
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Vlad Kotchev (as John Christian)
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Heinz Dietrich
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Fundraiser in Sunglasses (uncredited)