I watched this film recently on a French public TV station.
In the hope I'll see something in the vein of "Opération Corned Beef", one of my favourite French comedies which also stars Jean Reno and Christian Clavier, I got disappointed by this one. The dialogues between this duo aren't as memorable and performed not as snappy as in the aforementioned film.
Sure the Corsican landscapes and towns captured by this film are beautiful, it's not by coincidence people call Corsica "L'île de beauté" (The island of beauty) and the main actress is very nice to look at, but I think something like the comics album "Astérix en Corse" incapsulates better the Corsican mentality than this film even if there are a lot of parallels between these two.
In the end I have to admit I never read the comics which inspired "L'enquête corse", maybe I would have enjoyed the film more if I did.