Layers upon layers are necessary for Man Bites Dog. Its filmmakers follow filmmakers who follow a serial killer. There are many issues with that process. Issues that this trio of directors Benoît Poelvoorde, Rémy Belvaux, and André Bonzel, do not get around to addressing. Nor should they. There is no real point in doing so. Man Bites Dog works without explanation, but there is no harm in giving it to us. Why a group of filmmakers would follow a psychopath like that is never explained because there is no explanation. What could be offered? Indulgence in madness. Many are guilty of it, but how far can we take such an excuse before it wavers on the unbelievable?