This rarely watched Giallo turns out to be a passable thriller in which happens a mysterious death at an attraction park , resulting in unpredictable consequences with thrilling events , deliciously twisted events and brief touches of erotism . Mystery/thriller with baroque giallo overtones and surprising intrigue being well proceeded here and there , along with an unbearably tension in charge of the adequate protagonists . Insurance company sends its top man, an insurance investigator named Chris Buyer (Robert Hoffman) , he's assigned by the chiefs (Tomas Blanco, Philippe Leroy) of his company to investigate the death a wealthy industrialist named Johann Wallenberger who was found dead only hours after taking out a million dollar insurance policy . He decides to go undercover by dating the dead man's daughter , Catherine (Pilar Velazquez),who suffers astonishing nightmares and is taunted by menacing phone calls leaving her on edge of sanity , but before long , he's in her family home , in Madrid outskirts , there he meets her mother Magda (Irina Demick) who goes crazy and her sister Barbara Wallenberger (Patrizia Adiutori) who starts seducing him. Along the way , a stubborn commissioner called Huber (Adolfo Celi) begins investigating the grisly killings.

A decent mystery/thriller with a lot of mysterious murders and combining the elements of intrigue with drama and plot twists . This is pretty entertaining stuff about a wealthy financier who has showed up dead outside a haunted house ride , while a young playboy investigator seeks answers from a luxurious countryside house . Suspenseful and interesting screenplay by expert Antonio Fos , Lorenzo Gicca Palli and Al Bradley himself , though quite tiring at times. There is a surprising murder in a House of Horrors of Madrid amusement park where was also shot : Umberto Lenzi's Nightmare City (1980) and there is plenty of nudism and even adding Nazi war criminals This intriguing/chilling Italian/Spanish exploitation displays colorful images , disturbing frames , eerie scenes , nudism , mysterious events and pretty unexpected and unpredictable conclusion . Atmospheric and oddball Giallo with chilling frames , a lot of naked people , twisted scenes , taking place cruel killings , and confusion around Wallemberg family . Some illogical parts in the story are more than compensated for the excitement provided by some bizarre images , though sometimes are poorly shot and tiring at times . The movie is running out of ideas a lot ; however , being still good enough to be fun . Stars the handsome Robert Hossein as an investigator from insurance company , Pilar Velazquez as the beautiful young who's stalked by a stranger , Irina Demick as the often drinking mother and usually losing her mind and Patrizia Adiutori as her sexually active elder sister Barbara . Being a Spain/Italy co-production here shows up a number of familiar faces as Spanish actors such as : Tomás Blanco , Lorenzo Robledo , Teresa Gimpera , Maria Vico and Italians as Philippe Leroy , Adolfo Celi , Franco Ressel , Howard Ross .

It displays an adequate and atmospheric cinematography by Alfonso Nieva , totally filmed in Madrid , though interiors shot in Elios Studios, Rome, Lazio, Italy . Equally , it contains a mysterious and evocative musical score by Carlo Savina, a Morricone's disciple. This average giallo directed was regularly directed by really prolific Italian director Alfonso Brescia with flaws , gaps , shortcomings and a little bit cheesy . Alfonso Brescia often nicknamed Al Bradley was a below average director who in the 60s , 70s , and 80s made a lot of films . Bradley was a craftsman who directed all kind of genres . Alfonso Brescia or Al Bradley was born in Rome , 1930, and died in 2001 . He was a director and writer, known for directing Westerns as : Days of Violence , Zanna Bianca Il Cacciatore Solitario, White Fang and the Hunter , Killer Caliber and The Colt Is My Law . Alfonso began directing muscle-men epics as The Conqueror of Atlantis , The magnificent gladiator , La Rivolta dei Pretoriani . He also directed Sci-Fi and Sword and witchery genre as Iron Warrior , Sette Uomini D'Oro Nello Spazio , The war of the robots ; Adventure as Zanna Bianca , Amazons against Supermen and Wartime films such as Objetivo Rommel , Misiones Ardientes and Hell in Normandy . Rating 5.5 out of 10.

A wealthy industrialist named Johann Wallenberger has showed up dead outside a haunted house ride and is missing all of his money. His insurance company sends its top man, Chris Buyer (Robert Hoffman, Death Carries a Cane). He decides to go undercover by dating the dead man's daughter Catherine, but before long, he's in her family home as her mother loses her mind and her sister Barbara starts to seduce him. And oh yeah - more people start dying, which could be anyone from a blackmailer to a family member to even someone else from Chris' company trying to ruin his good name.

Director Alfonso Brescia is well-known to us here - we did an entire breakdown of his five post-Star Wars science fiction films - and you can trust the man who made The Beast In Space and the underrated Iron Warrior to make something interesting.

I love that this movie has more than one ending and more than one killer. It plays with the form a bit and keeps you guessing. I'm also all for Adolfo Celli showing up in every movie that I watch.

This early '70s giallo from director Alfonso Brescia does indeed feature a naked girl killed in a park. Prior to her untimely demise, the woman in question, rich bitch Barbara Wallenberger (Patrizia Adiutori),also sheds her clothes for a romp in the hay with her stable boy Günther (Howard Ross) and gets jiggy with insurance investigator Chris Buyer (Robert Hoffmann),who is on the scene to probe into the mysterious death of her businessman father Johan. Ladies' man Chris also gets to romp in the sack with Barbara's beautiful brunette sister Catherine (Pilar Velázquez),meaning that those looking for some T&A to go with their murder/mystery are more than catered for.

But while Brescia delivers in the boobs and bums department, he doesn't do so well when it comes to the intrigue, the brutality, or the sense of style that is synonymous with the genre. His film is visually bland, the plot is mediocre at best, and the death scenes lack imagination (and gore),making this far from essential viewing for giallo fans. As is usually the case with such films, some fun can be gleaned from trying to figure out who the killer is, although the motive is so abstruse that correctly predicting the murderer's identity is unlikely (it's even harder to guess if watching the atrocious VHS-quality pan and scan version I originally found, which was not just missing most of the nudity, but also the all-important wartime prologue).