Attack Of The Jack (Goosebumps Slappyworld #2): Volume 2

While visiting their Uncle Jack, a former sailor, Devin and Violet discover a trunk filled with antique jack-in-the-boxes. One box is hidden under the others, and plays an odd unpleasant song. Up pops a very ugly, mean-looking pirate puppet. "Thanks for letting Sailor Jack out!" he rasps.