French film, originally titled ''Le Pacte des Loups'', released in 2001 and directed by Christophe Gans, who was previously known for his LiveActionAdaptation of ''Manga/CryingFreeman''.

It is ''very'' loosely based on the real, historical mystery of "the Beast of Gévaudan" - a creature which allegedly killed almost 100 people, most of them women and children, over a three year period in a remote, rural area of France. In the summer of 1764, King Louis XV arranged a great hunt, and a wolf claimed to be the beast was slain, but subsequently more killings took place. "The Beast" has never been identified.

The hero of the film is nobleman Grégoire de Fronsac (Samuel Le Bihan), [[GeniusBruiser a soldier/scientist/taxidermist]] recently returned from Colonial America with his {{sidekick}}, the [[MagicalNativeAmerican wise]] [[NinjaPirateRobotZombie kung fu]] Indian Mani (Mark Dacascos).

Fronsac and Mani are quickly enlisted to hunt down the beast and study it. Along the way, they encounter a mysterious group of gypsies and a number of French aristocrats who may or may not be behind the beast's attacks. Creator/VincentCassel plays a one-armed hunting enthusiast who also takes an interest in the beast. Creator/MonicaBellucci also stars as a seductive Italian prostitute who is far more than she seems.

Overall, the film is notable for cramming just about every possible genre it can into its rather generous running time. It's a kung fu film, a monster movie, a mystery, a romance, a political thriller and a historical epic all rolled into one great big hodge-podge.
!!Tropes evident in ''Brotherhood of the Wolf'' include:

* ActionPrologue: The film begins with a martial arts fight between the two heroes and some local goons. The original script began with an extended chase through Parisian sewers.
* AllThereInTheManual: According to supplemental materials, the martial art that Manni displays proficiency in is actually a pre-modern form of savate, taught to him by Fronsac after aiding him during the French and Indian War. Anyways, his style and Frosnac's look rather different.
* AnimalMotifs: Lampshaded by Mani with Indian totems.
* AristocratsAreEvil: Well, some of them, though this is subverted in the bookends.
* AnAxeToGrind: Mani and his tomahawk.
* AxCrazy: [[spoiler: Jean-François. Aside for being the Beast's master is also a sadist psychopath obsessed with his own sister. No wonder the cult hired him for the dirty work.]]
* BackFromTheDead: [[spoiler:Played with. Fronsac was presumed dead after being poisoned by Sylvia, turns out the effects were just temporary.]]
* BadassBookworm: Fronsac is a scientist by profession, being one of the most accomplished in his field, and a veteran of the French-Indian Wars who rose to Captain through valor in battle, and shown to be just as skilled as Mani in melee combat.
* BadassNative: Mani, a native American Indian and exceptionally skilled fighter both hand-to-hand with a tomahawk.
* BadassLongcoat: The greatcoats worn by Fronsac and Mani at the very beginning. The image was used on most promotional material, even though they only wear them in one scene.
* TheBaroness: Sylvia.
* TheBeastMaster: [[spoiler:Jean-François, apparently from his time spent in Africa]].
* BiggerIsBetterInBed: Mani, judging from the prostitute's reaction.
* BitchInSheepsClothing: [[spoiler:La Bavarde and Jean Francois.]]
* BittersweetEnding: [[spoiler:The villains of the piece are killed and their plot is thwarted, but the heroes don't fare much better. Mani's dead; the much feared beast was just an innocent animal who was forced to slaughter people by its sadistic owner, and Fronsac has to MercyKill it; the Marquis d'Apcher - one of the few decent people in this whole thing - is recalling the story as he's about to be sent to the guillotine; and all he can do is hope that Fronsac and Marianne got their happily ever after. At least there are hints that they did get it.]]
** Admittedly the REAL Marquis d'Apcher lived through the Terror and died in Barcelona in 1798. So... [[SparedByAdaptation spared by real life?]]
* BladeBelowTheShoulder: The gypsy men's preferred weapons are long metal claws attached to a handle.
* BrainFever: [[spoiler:Marianne falls deadly ill by the end of the film after being raped by Jean-François. Don't worry, though; she gets better.]]
* BrotherSisterIncest: [[spoiler:Jean-François towards Marianne. It's never quite clear what exactly happens on his mind, but he looks quite psychotic and certainly ''wants'' her.]]
* ChekhovsGun: [[spoiler:Or rather, Chekhov's handcrafted silver bullet. Also, the bone-sword, glimpsed briefly in Jean-Francois' occult RoomFullOfCrazy.]]
* ChurchMilitant: [[spoiler:Sylvia is actually a spy for the Vatican.]]
* CombatHandFan: Sylvia slits a woman's throat with a serrated fan.
* {{Cult}}: [[spoiler:More of a secret society, really. The eponymous Brotherhood of the Wolf is a group of conservative aristocrats seeking to hold on to the old ways by putting the fear of God into the hearts of the commoners by way of highly trained, homicidal beast. From their point of view, perhaps a justifiable plan, seeing as the film ends with aristocratic good guy Thomas d'Apcher - now old, he's been retelling experiences from when he was a young man - being taken to his execution by revolutionaries.]]
* DarkChick: La Bavarde, the epileptic gypsy girl who apparently can't get enough violence.
* DeadpanSnarker: one of the first thing's we're told about Fronsac is that he's "a wit," which he lives up to especially when flirting with Marianne (who herself can give as well as she gets).
* DesignatedGirlFight: [[spoiler:Sylvia is the one to take out La Bavarde, though Fronsac does kill a number of other gypsy women. It's more of a CurbStompBattle though.]]
* DoesNotLikeGuns: Mani. [[AnAxeToGrind Tomahawks Are Just Better]]
* DragonInChief: [[spoiler:Although Sardis is the leader of the Brotherhood and the big decision-maker, it is Jean-François, the Beast's trainer, who is the film's primary antagonist.]]
* DualWielding: Fronsac uses two daggers with lethal efficiency during his RoaringRampageOfRevenge.
* ErmineCapeEffect: And most of its [[SisterTrope Sister Tropes]].
* EverybodyWasKungFuFighting: Fronsac and Mani use a French form of stick-fighting called ''Canne De Combat'' mixed with the martial art of savate, a French kicking style also used by the antagonists. However, because the action scenes are filmed in an Eastern style, many audience members could find 18th centry Frenchmen "kung fu fighting" to be strange. Mani's style is clearly based on Mark Dacascos's training in background in Wun Hop Kuen Do, and [[spoiler:Jean-François]]'s heavy swordfighting can be easily mistaken for UsefulNotes/{{kendo}}.
* FakingTheDead: [[spoiler:Fronsac]].
* FacialMarkings: Mani's warpaint.
* FemmeFatale: Sylvia.
* FirstPersonPeripheralNarrator: Thomas, Marquis d'Apcher, tells the story of hero Grégoire de Fronsac.
* GangstaStyle: Fronsac fires two flintlock pistols this way during a target practice sequence. HilariousInHindsight if you know anything about flintlock weapons: not only would aiming them that way make an already-inaccurate weapon even more so, but they simply wouldn't be able to fire in that position.
* GenreShift: More like genre blender, actually.
* HeroesPreferSwords: Fronsac uses two swords during the climax. Luckily the villain brought his own.
* HeterosexualLifePartners: Gregoire and Mani
* HighClassCallGirl: Sylvia claims to be "expensive".
* TheIngenue: The count of Monragias, Jean-Francois and Marianne's father. [[spoiler: And one of the few aristocrats who knew nothing about the Cult.]]
* KarmicDeath: [[spoiler: Henri Sardis, creator and leader of the Brotherhood]] escapes arrest only to be chased down by the pack of wolves, a number of which were previously slaughtered en masse under the misguided assumptions of being the Beast.
* LetsGetDangerous:
** While Fronsac is demonstrated to be a tough guy right from the start, Mani seems to be the real muscle of the group. In the third act, however, Fronsac pulls out the stops and basically [[spoiler:murders 3/4 of the cast]].
** A villainous example occurs with [[spoiler:Jean-François, who spends most of the film as a somewhat foppish, crippled aristocrat who likes guns. In the third act, he reveals that he's not a cripple after all, but a rather hulking bruiser with a sword made from an animal spine.]]
* LoveInterest: Marianne.
* MagicalNativeAmerican: Mani has an air of mysticism about him -according to Fronsac he was "a sort of priest" to his tribe, presumably a shaman and/or medicine man- and seems to have some sort of psychic connection with a wolf. He also shows hints of being fully aware of the archetype and quite the DeadpanSnarker.
* MalevolentMaskedMen: The conspirators wear red cloaks and masks.
* MarkedBullet: Jean-François uses silver bullets to "sign" his shots.
* MercyKill: [[spoiler:Fronsac, towards the ''Beast'']]
%%* MookChivalry
* MsFanservice: Monica Bellucci once again displays her willingness to disrobe. No one complains.
* NinjaPirateRobotZombie: Fronsac and Mani.
* NonMaliciousMonster: [[spoiler:the Beast is actually a big lion disguised as a monster with metal spikes and shards by the Brotherhood members and trained to scare and/or kill the villagers. But the Brotherhood, and Jean-François in particular, are the real villains.]]
* ObfuscatingDisability: [[spoiler:Jean-François's right arm has not been amputated, it was just horribly mangled when he trained the beast. He also let his fingernails growing]].
* OfCorsetsSexy: All the women wear one, but especially the prostitutes, for whom it's their only clothing.
* PimpedOutDress: Justified in that we're moving among mid-18th century French aristocrats.
* PsychoForHire: [[spoiler: Jean-Francois to the Brotherhood.]]
* TheQuietOne: Mani doesn't talk much; in fact he doesn't have a single line for the first half-hour or so, leaving it slightly ambiguous whether he actually speaks French. It's not clear if he does this deliberately so people will say things around him that they otherwise wouldn't or if he's just a man of few words by nature; either possibility would be in-character for him.
* RedOniBlueOni: Fronsac and Mani, respectively. It reflects on their fighting styles: Mani's is gracile and based in a continuously flowing rhythm and he avoids killing, but Fronsac's is savage and direct, relying in linear attacks, and he certainly doesn't care about butchering opponents.
* TheReveal: [[spoiler:Jean-François ''didn't'' lose his arm in a hunting accident. It just got badly mangled, and he's had it tied behind his back pretending to be crippled ever since, probably to throw the scent off his trail as the enforcer of the Brotherhood.]]
* TheRevolutionWillNotBeCivilized: The story is bookended with [[FirstPersonPeripheralNarrator an older Thomas d'Apcher]], a good-hearted aristocrat, about to be killed by a revolutionary mob.
* RightThroughHisPants: Fronsac with Sylvia, a strange example in an otherwise breezy film.
* RoaringRampageOfRevenge: Fronsac [[spoiler:after Mani is killed.]]
* SacrificialLion: [[spoiler:Mani]].
* ScaryImpracticalArmor: [[spoiler:The Beast wears armor covered in bone and metal spikes that is simply there to make it appear more monstrous. The armor doesn't appear to hinder its movements, however.]]
* SceneryPorn: Both played straight (the set designs are gorgeous), and with a bit of a pun (the naked form of Creator/MonicaBellucci forms a couple of the hills in a lingering outdoor shot).
* ShoutOut: The WhipSword is lifted directly from ''VideoGame/SoulCalibur''
* SilverBullet: Jean-François' signature bullets. Autographed, no less.
* SinisterMinister: [[spoiler: More subtle than most examples, but Henri Sardis certainly qualifies.]]
%%* SlashedThroat
* SuspiciouslyStealthyPredator The Beast [[spoiler: actually a lion in ScaryImpracticalArmor]] somehow manages to sneak through the French woods and countryside without leaving a trace.
* ThrowingYourSwordAlwaysWorks: Sort of. [[spoiler: As his thoat has been slashed by Fronsac, Jean-François grabs one of Fronsac swords with his WhipSword. Fronsac lets the sword go when Jean-François pulls his whipsword back to reassemble it, impaling Jean-François in the process. The slow motion in that scene feels like a SpecialEffectFailure though.]]
* TookALevelInBadass: Fronsac after [[spoiler: Mani is killed]]. Or at least, it seems that way from the point of the view of the rest of the characters, since up until then Fronsac had been content to let Mani handle badass duty. It turns out he was just as Badass as Mani all along, [[UpToEleven if not more so]], and when properly motivated he [[RoaringRampageOfRevenge plows a path of utter destruction]] that makes a viewer wonder why he even kept Mani around at all. However, in the deleted scenes, the first fight segment (Mani vs the villagers with staffs), Fronsac tags in later, and finally the two fight together.
%%* TooKinkyToTorture
* TownWithADarkSecret: Oh boy...
* TheUnreveal: It's never explicitly said what kind of animal the Beast is. All we are told is that [[spoiler: it's the offspring of an animal that Jean-François brought back with him from Africa.]] Viewers only get a hint at a shot to the animal's unarmored eyes, revealing cat-like irises and gold fur. WordOfGod is that it's [[spoiler:a lion]].
* VeryLooselyBasedOnATrueStory: The Beast of Gevaudan is the name given to a man-eating wolf-like creature that terrorized the the province of Gevaudan from 1764 to 1767. Suffice to say, the director and the screenplay writers took plenty of liberties with the story. [[spoiler: Also, the real Marquis d'Apcher survived the French Revolution and died in 1798.]]
** Interestingly, some modern investigations have theorized that the Beast might have been a non-autochthonous animal (maybe a hyena, or even a [[spoiler:big cat]] as portrayed) controlled by men with an unknown purpose. The film could therefore be more realistic than it looks.
** Most historians consider that the Morangiès family wasn't involved in the Beast's attacks in any way.
* WeaponizedAnimal: The beast.
* {{Werewolf}}: Not really, but the Gevadaun myth is so often associated with werewolves that the movie must at least play with this trope in passing, most notably with Jean-François' silver bullets, with Fronsac teasing him about believing in werewolves (it's really so that his bullets will be distinctive).
* WhipSword: [[spoiler:Jean-François]] wields one in the climatic duel with Fronsac. How it is built looks difficult to describe, but the blade's bulk and its unusual configuration (it's made from an animal ''vertebral column'') probably help to shelter some kind of magnetic mechanism to keep it extended while used as a sword.
* TheWisePrince: Thomas, young Marquis d'Apcher, one of the few aristocrats that fully trusts Fronsac and who sees Mani as a person, and not as a savage. [[spoiler: It's possible that this is why the other aristocrats never considered him to join their cult]].
* WouldHitAGirl: Mani and Fronsac don't have much of a problem fighting the female gypsies, though Mani seems to go a bit easier on them in their initial dust-up. [[spoiler: Except La Bavarde, the woman they saved when they first arrived into town. This ends up costing Mani his life.]]