Floodtide (1987)

Ex-pat British doctor Thomas Ramsey lives a quiet life in a Normandy fishing village. When his old friend—British Defence Secretary Exton Waite—dies from a secret cocaine overdose, Ramsey launches a private pursuit against a ruthless European drug smuggling cartel. Ramsey’s hunt for cartel leader Lambert spans the coast of Normandy, London, the North West of England, and the French countryside, putting him at odds with both the drug network and police surveillance.