three ten year old child bear at the same time during a solar eclipse begin to slyly murder anybody that offend them . while killer kid movie weren not exactly new at the time of this twisted 80 slasher the theme of child a murderer work nicely for this film . bloody birthday do deliver some good chill and suspense and while manage to be a competent killer thriller with some strange quality . it straddle a fine line between cheesy and creepy and but it do remain entertain throughout with an interesting plot . there some strong murder scene and as well a a good bit of nudity to establish this a a solid slasher guilty pleasure . the cast do a fairly good job . young star elizabeth hoy and k. c. martel deliver some menacing performance and while rise star julie brown do a striptease before a memorable murder scene . veteran star susan strasberg do well a the teacher and jose ferrer have a cameo appearance . all around this off beat slasher entry isn not bad and though it admittedly not flawless and but it be well worth watch for genre fan . out of .