蛇蛋是由英格玛·伯格曼  执导，大卫·卡拉丁  丽芙·乌曼  海因茨·贝能特  杰特·弗罗比  等人主演的，于1977年上映，该恐怖片讲述的是：Ingmar Bergman's The Serpent's Egg follows a week in the life of Abel Rosenberg, an out-of-work American circus acrobat living in poverty-stricken Berlin following Germany's defeat in World War I. When his brother commits suicide, Abel seeks refuge in the apartment of an old acquaintance Professor Veregus. Desperate to make ends meet in the war-ravaged city, Abel takes a job in Veregus' clinic, where he discovers the horrific truth behind the work of the strangely beneficent professor and unlocks the chilling mystery that drove his brother to kill himself.