A series of ghastly murders are being committed. The one similarity in each of the murders is that a strange buzzing sound is always heard right before the murder occurs. Is the killer invisible or possibly some other incredible creature?
北原義郎
as Chief Inspector Wakabayashi
叶順子
as Akiko Hayakawa
品川隆二
as Dr. Tsukioka / The Invisible Man
毛利郁子
as Mieko
鶴見丈二
as Sugimoto
浜口喜博
as Detective Hayama
南部彰三
as Dr. Hayakawa
見明凡太朗
as Chief of the Metropolitan Police
伊沢一郎
as Kôkichi Kusunoki / The Human Fly II
中条静夫
as Yamada / The Human Fly I
Kô Sugita
as Hajima
花布辰男
as Director Tada
