Dr Ordman (Warner Baxter) has gone to Paris to lecture, and definitely not get involved in investigating a crime. Of course, very soon he is helping his detective friend (Marcel Journel) out with a murder as the main suspect could be insane.
The Crime Doctor investigates the case which involves art forgery, an old family dispute and a knife thrower act!
The ninth entry in the Crime Doctor series, and pretty enjoyable too. Although set in Paris, the crime procedural is fairly standard for a B-movie of the period, but the setting adds a little bit of freshness and novelty.