The "Frog with the Mask" spreads fear and anxiety within the streets of London. The creature is hidden under a wide clergyman's robe, its face covered up and only two enormously frightening, gleaming eyes can be seen. Together with members of his gang the "Frog with the Mask" hunts down innocent victims. Scotland Yard's Superintendent Elk is full of activity, as there are absolutely no traces on the crime scenes - only the wrists of the murdered bear a visible trace: the black "Frog Gang" mark. But - Then there is also Private Detective Richard Gordon together with his butler who are trailing down the "Frog with the Mask" as well... 　　译文(2): “戴面具的青蛙”在伦敦街头传播恐惧和焦虑。这个生物藏在一个宽大的牧师长袍下面，它的脸被遮住了，只能看到两只非常可怕的闪闪发光的眼睛。“戴面具的青蛙”和他的帮派成员一起猎杀无辜的受害者。苏格兰场的 Elk 警司非常活跃，因为在犯罪现场完全没有任何痕迹——只有被谋杀者的手腕上有一个可见的痕迹: 黑色的“青蛙帮”标记。但是，还有一位私家侦探理查德 · 戈登和他的管家也在追踪“戴面具的青蛙”。