[[caption-width-right:307:Have you guessed who the werewolf is? You have 30 seconds to give your answer.]]

->''"This film is a detective story-- in which you are the detective. The question is not "Who is the murderer?"-- But "Who is the werewolf?" After all the clues have been shown-- You will get a chance to give your answer. Watch for The Werewolf Break."''
-->-- '''The opening narration'''

And that's essentially the gist of it. Rich hunter Tom Newcliffe (Calvin Lockhart) invites several people to his mansion, the reason being that he desires to hunt for a new, more dangerous game: a werewolf. And he knows that one of his guests is one.

The film was produced by Creator/AmicusProductions and released in 1974 to cash in the {{blaxploitation}} craze. It is based on the story "There Shall Be No Darkness" by Creator/JamesBlish.
!!Examples in this film:

* AgentScully: Pavel, the Newcliffes' security chief. He still goes along with the whole werewolf thing if only because Tom pays him so well.
* AcquittedTooLate: [[spoiler:Caroline is first one to transform into a werewolf after the Werewolf Break, but it then tuns out that she was infected by the real werewolf. The first werewolf attacked one of the security dogs on Newcliffe's estate. Caroline tried to comfort the dying animal. Unfortunately, cross-contamination occurred because she had cut herself earlier. Her blood mixed with the dog's infected blood, passing the werewolf virus onto her.]]
* AlliterativeName: The pianist Jan Jarmokowski.
* AnswerCut:
-->'''Paul''': (Looks out of the window) A full moon! Shame that nobody thought to order--
-->'''Tom''': (Enters the room) Wolfbane?
* AnAxeToGrind: The person who is the werewolf tries to kill Tom with a hatchet.
* AsYouKnow: There's a ''lot'' of this between Tom and Pavel at the beginning.
* BloodyHandprint: Can be seen in [[spoiler:Bennington]]'s room when he is found dead.
* CarChase: Short one ensues when Jan tries to escape from Newcliffe's manor after hearing his plan for the weekend.
* ChairReveal: Used when Tom finds Pavel's corpse.
* CloudCuckooLander: Paul. For most of the film, he treats the entire thing like a hilarious joke, even referring to the passing of the silver candlestick at dinner as "a kind of classy RussianRoulette" and ''kissing'' the candlestick when it's his turn, and shooting at people with arrows while drunk and intentionally missing, just to get a rise out of them.
* CoolGuns: Tom's Rexim-Favor [=Mk5=]. Pavel also uses a silver Walther PPK at one point.
* CoversAlwaysLie: Along with the billing, Creator/PeterCushing also hogs the cover, due to his horror image status.
* DrivenToSuicide: After [[spoiler:killing the werewolf, Newcliffe kills himself so that he won't turn into one]].
* DrivingQuestion: Who is the werewolf?
* EgomaniacHunter: Tom Newcliffe. He's less interested in killing the werewolf for the good of humanity than he is because he sees it as an interesting challenge. His mansion is also filled with animal trophies.
* EvilDetectingDog: Tom's dog [[spoiler:senses when someone is about to make an attempt on his life with an axe.]]
* EyeScream: Pavel's corpse has one of its eyes gouged out.
* FakeOutOpening; The film opens with Newcliffe being chased around with a helicopter and men with guns. Turns out he is just testing his new security system with himself as the bait for the guards.
* {{Foreshadowing}}: "Tom, what if the werewolf turns out to be me?" "[[FingerGun Pow]]!"
* GetAHoldOfYourselfMan: Panicking Davina gets slapped.
%%* HollywoodDarkness
* HellishCopter: Tom's helicopter does ''not'' come to a good end.
* IAmAHumanitarian: Paul ate a piece human flesh when he was still a doctor.
* IKEAWeaponry: Tom assembles a machine gun from a case when he goes to hunt the werewolf.
* MadeOfExplodium: The helicopter, which erupts into a huge fireball and burns like it's made of dry matchwood after Tom hits it trying to shoot the werewolf.
* MercyKill: Tom kills his dog after it suffers a fatal wound from the werewolf.
* OOCIsSeriousBusiness: You ''know'' things are getting serious when CloudCuckooLander Paul finally starts suffering a genuine nervous breakdown and stops finding everything funny.
* OurWerewolvesAreDifferent: There's a lot of discussion about if silver affects them or not. The answer is somewhere in between.
* RedHerringMole: [[spoiler:Paul Foote gets initially painted as the werewolf, but ultimately proves no the be one]].
* TheReveal: And the werewolf is: [[spoiler:Jan the pianist]].
* SensorSuspense: Used when Tom is hunting the werewolf on the first night.
* SmartPeoplePlayChess: Dr. Lundgren and the diplomat Bennington play a game of chess.
* StakingTheLovedOne: [[spoiler:Tom is forced to shoot his wife Caroline when she turns into a werewolf]].
* SuperWindowJump: The werewolf jumps through a window to kill Pavel.
* TeacherStudentRomance: The relationship between Jan and Davina started when he was teaching her.
* ThisWasHisTrueForm: After dying, the werewolf's corpse changes back to human.
* TitleDrop:
-->'''Tom''': Tonight is my last chance, the last night of the full moon. And I warn you both; tonight, the beast must die, and will.