Nancy is on the case, once again! Her father’s client, Mr.Sakamaki needs help. His deceased grandfather’s estate, Kaluakua has a mystery nobody knows. Its Golden Pavilion may be haunted, and two middle-aged suspects claim to be the grand children of Grandfather Sakamaki and are going to run and take over the estate. Nancy must prove them wrong and stop a terrible gang called the Double Scorps who are trying to steal the secret kings cape in the Golden Pavilion. Are the posing grandchildren part of the Double Scorps and are going to inherit the estate for all of the Double Scorps? What does a sacred king’s cape have to do with the Secret of the Golden Pavilion? And who is that ghost that dances by the Pavilion every night? Nancy is going to find out everything, from the Double Scorps, to perhaps two Grandfather Sakamaki. Could the Grandfather Sakamaki in California be the wrong one that owns the Kaluakua? Help Nancy Drew solve the mystery!