Jean-Pierre Léaud, Claude Jade (romantically involved with Truffaut, was in the other Antoine Donel films, Hitchcock's Topaz), Delphine Seyrig, Michel Lonsdale (Phantom of Liberty, Moonraker)
Mus. Antoine Duhamel (Weekend)
ph. Denys Clerval
Actually more enjoyable than the first one.
Catches the casual cruelty of young men, though it's no wonder AD has a tricky relationship with women. Some of that great rapid editing.
That travel poster from L'Argent de Poche can briefly be glimpsed!