Rome is shattered by a series of gruesome murders that paint the Eternal City deep red. The suspicion grows that these atrocious crimes are connected with the return of one of the most heinous serial killers of our time - Karl the Butcher.

Apartment 37413 Once a week three crazy brothers meet to relive their childhood disorder eating human raw organs and living a sadomasochistic rapport/intercourse... Apartment 28513 The torture of Barbie. A man enjoys torturing and scarring Barbie, but one day he'll decide to do it with real women... Apartment 13396 A painter uses his blood and his muse's faces to prepare the perfect colors for his masterpiece... Apartment 1932301 A woman is looking for a way to becomes excited and she'll discover it touching/with the contact of insects and cockroaches... Apartment 121197 A self-destructive necromancer conserves the mummified corpse of his husband and every night she has sex with it... Apartment 7428M An erotomaniac obsessed by a clown who is in his house blowing up balloons and exploding it.

Symphony in Blood Red is an Italian 'giallo', a horror film inspired by the work of Dario Argento. It is the first feature movie directed by Luigi Pastore, and in collaboration with Antonio Tentori (Cat In The Brain), who co-wrote the screenplay.