The Mystery of the Singing Serpent Author:M. V. Carey The Three Investigators stole across the shadowy patio. Jupiter held a branch aside and looked into the dining room. — Then they heard the sound. It was faint at first—a soft throbbing. A singing sound, yet in no way was it a song. It was high and piercing, then a low murmur. It wavered—then burst forth in hideous gurgling waves. — The Three Inves... more »tigators listened in mounting panic…« less