"A man is saved from certain death by selling his soul to the devil, who charges him with recruiting others to his evil cause. As part of his terms for relinquishing control of his soul to Satan, the man is cursed to endure transformation into a hideous creature and stalk his victims by night. The local authorities want to find and destroy this murderous creature before it can take another victim, while the man looks to find a way to end his cursed existence," according to the DVD sleeve's synopsis.

Filmed in the Philippines, with director Eddie Romero. It's difficult to completely understand the story; approximately, it's Faust becoming the Werewolf with a touch of Frankenstein, after a time warp.

It's more interesting, at this point, to assess the career of star John Ashley. When he mysteriously appears in the present, doctors remove bandages from Mr. Ashley's said to be horribly disfigured face. Instead, a bearded Ashley looks better in 1971 than ever (in films since the 1950s). Ashley's characterization (as Joseph Langdon aka Philip Rogers) isn't terrific, but it's valiant; probably, his career lacked worth material. Vic Diaz (as Death aka Satan) is entertaining, in the tastiest role. And, Mary Wilcox (as Julia Rogers) is the blonde dish Ashley samples.

Beast of the Yellow Night features a hideous man-monster that tears its victims to shreds, but the real horror is a semi-naked Vic Diaz. The rotund Filipino actor appears at the beginning of the film as Satan wearing nothing but a loincloth (my eyes!),promising dying army deserter Joseph Langdon (John Ashley) immortality if he agrees to become a servant of evil. Unperturbed by Vic's lack of clothing, Joseph agrees and is 'reborn' in several bodies over the years, his mission to awaken the evil in the people that he meets. Langdon's latest guise is that of facially disfigured accident victim Philip Rogers, who, having been pronounced dead, amazes everyone by coming back to life with a brand new face (his doctor is so shocked that he promptly has a heart attack).

Phil's sexy blonde wife Julia (Mary Charlotte Wilcox) takes her hubby home but notices that he now behaves rather strangely. But it's not just his personality that has changed: from time to time, Phil/Langdon physically transforms into a horrible bloodthirsty creature with rubber claws and great big jaws.

The first of producer Roger Corman's movies to be shot in the Philippines during the '70s, this clunker from director Eddie Romero is frequently confusing (what Satan has to gain from turning his servant into a killer beast is never explained) and pretty dull for the most part, even when Ashley is in monster mode. There are a couple of brief gory moments (a disembowelment and some slashed faces),and Wilcox sheds her clothes (or her body double does--it's hard to tell),but for the most part the film is painfully slow, especially when the creature is given refuge by an old, blind bandit (an idea lifted from Frankenstein?). The ending sees the monster and the blind man trapped by the army in a burning field of grass, Phil/Langdon finally shot and killed even though he was bullet-proof only moments earlier.

I'll give this film credit for one thing. It sure has a cool house for its married couple (John Ashley and Sharon Wilcox),one that both James Bond and Matt Helm would be envious of. Other than that, this doll supernatural horror film has little to offer other than some silly looking makeup for Ashley when he is in his werewolf mode, looking like a teen knock off costume of Michael Jackson's thriller video. In fact, the makeup for the bluish werewolf get up is a combination of Jackson and Papa Smurf.

There is also a very hammy performance by Vic Diaz as a portly Satan, determined to gain his latest victim's soul by having him come out hiding, taking over Ashley's life and commit all sorts of evil deeds. A blind convict whom Ashley encounters while hiding out after committing a bunch of hideous murders (which are gory, not scary) try to provide a moral for the film, but the dialogue is ridiculously silly and the pacing of the film is painfully slow. Diaz's resemblance towards a certain Asian dictator adds irony, but that is completely accidental considering that this was made nearly 50 years before that leader came along.