Le Doulos is not as well-known as Melville's later colour pictures, but very much undeservedly so. Gangster films rarely manage to surprise their audience with the plot (unless they sacrifice logic as so often in Raymond Chandler's stories), but here we have an exception. This one is entirely logical and entirely surprising; an extraordinary gangster story of trust, betrayal and code of honour. It is impossible to correctly guess the outcome even when you are through 2/3 of the film.
Highly recommended.
Highly recommended.