IMDb > A Bay of Blood (1971)
Reazione a catena
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A Bay of Blood (1971) More at IMDbPro »Reazione a catena (original title)

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6.7/10   5,643 votes »
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Popularity: ?
Up 3% in popularity this week. See why on IMDbPro.
Mario Bava (screenplay)
Franco Barberi (story)
View company contact information for A Bay of Blood on IMDbPro.
Release Date:
3 May 1972 (USA) See more »
The second movie rated "V" for violence. See more »
An elderly heiress is killed by her husband who wants control of her fortunes. What ensues is an all-out... See more » | Full synopsis »
Plot Keywords:
1 win See more »
User Reviews:
Wheres the plot? See more (90 total) »


  (in credits order) (verified as complete)

Claudine Auger ... Renata

Luigi Pistilli ... Albert
Claudio Camaso ... Simon (as Claudio Volonté)
Anna Maria Rosati ... Laura (as Anna M. Rosati)
Chris Avram ... Frank
Leopoldo Trieste ... Paolo
Laura Betti ... Anna
Brigitte Skay ... Brunhilda

Isa Miranda ... Federica
Paola Montenero ... Denise (as Paola Rubens)
Guido Boccaccini ... Duke
Roberto Bonanni ... Robert
Giovanni Nuvoletti ... Filippo
rest of cast listed alphabetically:
Renato Cestiè ... Son (uncredited)
Nicoletta Elmi ... Daughter (uncredited)
Frank Latimore ... Frank (voice: English version) (uncredited)
Andy Luotto ... Robert (voice: English version) (uncredited)
Gene Luotto ... Paolo (voice: English version) (uncredited)
Edward Mannix ... Albert (voice: English version) (uncredited)
Richard McNamara ... Attendant / Judge (voice: English version) (uncredited)
Larry Ward ... Simon (voice: English version) (uncredited)

Directed by
Mario Bava 
Writing credits
(in alphabetical order)
Franco Barberi  story
Mario Bava  screenplay
Gene Luotto  dialogue: English version
Filippo Ottoni  screenplay
Dardano Sacchetti  story
Giuseppe Zaccariello  (screenplay) (as Joseph McLee)

Produced by
Giuseppe Zaccariello .... producer
Original Music by
Stelvio Cipriani 
Cinematography by
Mario Bava 
Film Editing by
Carlo Reali 
Production Design by
Sergio Canevari 
Art Direction by
Sergio Canevari 
Costume Design by
Enrico Sabbatini 
Makeup Department
Adalgisa Favella .... hair stylist
Franco Freda .... makeup artist
Production Management
Roberto Cicutto .... production supervisor
Fernando Franchi .... production manager
Second Unit Director or Assistant Director
Lamberto Bava .... assistant director
Roberto Rossellini .... second unit director (uncredited)
Sound Department
Carlo Diotallevi .... sound recordist
Gene Luotto .... post-synchronization
Carlo Tarchi .... sound
Special Effects by
Carlo Rambaldi .... special effects (as Rambaldi)
Camera and Electrical Department
Gianlorenzo Battaglia .... assistant camera (as Lorenzo Battaglia)
Emilio Varriano .... camera operator
Franco Vitale .... still photographer
Music Department
Luca di Silverio .... soundtrack album producer
Other crew
Gene Luotto .... dialogue director (English version)
Patrizia Zulini .... continuity
Ferruccio Amendola .... voice dubbing: Leopoldo Trieste (uncredited)
Cesare Barbetti .... voice dubbing: Claudio Camaso (uncredited)
Roberto Chevalier .... voice dubbing: Roberto Bonanni (uncredited)
Pino Colizzi .... voice dubbing: Chris Avram (uncredited)
Maria Pia Di Meo .... voice dubbing: Claudine Auger (uncredited)
Pino Locchi .... voice dubbing: Luigi Pistilli (uncredited)

Production CompaniesDistributorsOther Companies

Additional Details

Also Known As:
"Reazione a catena" - Italy (original title)
"Twitch of the Death Nerve" - USA (new title), USA (alternative title)
"Bay of Blood" - USA (alternative title)
"Ecology of a Crime" - International (English title) (informal literal title)
"The Antecedent" - USA (informal title)
"The Last House on the Left, Part II" - USA (reissue title)
See more »
84 min | 76 min (cut)
Color (Eastmancolor)
Aspect Ratio:
1.85 : 1 See more »
Sound Mix:
Argentina:16 | Australia:R | Canada:R (Ontario) | Canada:13+ (Quebec) | France:16 | Germany:(Banned) | Italy:VM18 | Netherlands:16 | New Zealand:R16 | Norway:18 (DVD rating) (2009) (uncut) | Spain:18 | UK:R (original rating: 1972) | UK:18 (uncut version) (re-rating) | UK:18 (re-rating) (1994) (cut) | UK:(Banned) (1984-1994) | USA:R | West Germany:(Banned)

Did You Know?

Mario Bava personally suggested the title "Twitch of the Death Nerve" for the American release after hearing it was being marketed as a sequel. The film was released under both titles.See more »
Continuity: The Count is stabbed repeatedly in his back and then he falls on his back and dies. When the killer is dragging him away, there should be a blood trail leading from The Countess to the door.See more »
Simon:Man should live and let live, and without any interfering.
Paolo:Even that poor squid was free once, Simon, eh? I study Coleopters because I love them.
Simon:Sure, but the squirming little creatures still end up under your microscope. Yeah, he's dead alright but at least I eat my squid. But I don't kill as a hobby like you do.
Paolo:Good Lord, Simon; you make me feel like a murderer.
Simon:I'm not saying that, Mr. Fossati; but if you kill for killing's sake - you become a monster.
Paolo:But, man isn't an insect, my dear Simon. We have centuries of civilization behind us, you know.
See more »
Movie Connections:


What are the differences between the old BBFC 18 Version and the Uncensored Version?
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12 out of 20 people found the following review useful.
Wheres the plot?, 4 August 2003
Author: chanvat from North Carolina

Ok I will admit that this film has some gory and creative kills...but where is the darn plot? The body count is extremely high, but there is nothing to hold all those kills together, which led me to just watch the film in fastforward to get to all the points where people get killed.

Also, I would say that the ending is very contrived, and not pleasing one bit. To say the least, it was very random and not even with the rest of the story such as it is.

Even though the rating is somewhat high for this flick avoid it, methinks people just like it because its Italian, however for me thats just not enough!

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Message Boards

Discuss this movie with other users on IMDb message board for A Bay of Blood (1971)
Recent Posts (updated daily)User
what's with the fisherman and that octopus? albersbrian
Edited Version ? Ed_Gein
Very good film! spiritualcounsellinguk
Critical Reception WerewolfNightmare101
It's a lake not a bay right? anthonynorris-783-181359
Ending?? *Spoilers*...I guess. madmudder_04
See more »


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