someoneor something thingis leaving puncture marks jugular draining victims blood till dead police detective karl brettschneidermelvyn douglas slipping bmovie horror genre greater heightsis stumped whoor whatis behind notorious crimes village overcome hysteria karl depends trusted medical genius dr otto von niemannlionel atwill yet another effective mad scientist roleto provide feedback might causing deaths innocents also fears safety beloved ruththe lovely fay wray stars third time atwill doctor x  the mystery wax museumwho niemanns assistantbr br dwight frye steals film rather loony village idiot collects bats carries demented demeanor wherever goesits easy see becomes suspect local paranoia fever pitch maude eburne provides films humor naiveand easily influencedpatient von niemanns believes ailments reads books near laboratory works impressionable often von niemann humors constant fictional illnesses feels plagued with lionel belmore returns yet another frightened superstitious brgermeisterbr br creaky static rather entertaining nonetheless thanks cast film obviously lowbudget come hurt film much since put together rather well director frank r strayer crew im certain films print seen better days though kind bhorror item find packaged  random cheesefests poverty row programmers films villainand motives feeding synthetically made biological creaturecertainly provides different take frankenstein formula many might disappointed end results film strays away actual supernatural tale real vampire killer causing murders