It is poor old "Sylvain" (Simon de La Brosse) that I felt sorry for as he takes a bit of a shine to the visiting "Pauline" (Amanda Langlet) only to find himself swiftly embroiled in a tangled web of infidelities, lies and deceit. Much of that emanates from her cousin "Marion" (Arielle Dombasle). She is on the verge of divorce and just wants to spend some time au bord de la mer in peace and quiet. That plans pretty…