One of several 'animal-in-the-title' cash-ins released in the wake of Dario Argento's box-office smash The Bird with the Crystal Plumage, The Iguana with the Tongue of Fire is a gloriously excessive giallo that boasts a rogues gallery of perverse characters; violent, fetishized murders, and one of the genre's most nonsensical, red-herring laden plots (which sees almost every incidental character hinted at potentially being the killer). Set in Dublin (a rather surprising giallo setting), Iguana opens audaciously with an acid-throwing, razor-wielding maniac brutally slaying a woman in her own home. The victim's mangled corpse is discovered in a limousine owned by Swiss Ambassador Sobiesky (Anton Diffring, Where Eagles Dare) and a police investigation is launched, but when the murdering continues and the ambassador claims diplomatic immunity, tough ex-cop John Norton (Luigi Pistilli, A Bay of Blood) is brought in to find the killer...