The Silver Casket/The Buccaneer's Bones

Stanley and his friend Daisy continue their investigation into the mystery of the Ibis and a hidden silver casket on the isolated island of Crampton Rock, which can only be reached at low tide. Their digging awakens the spirits of long-dead pirates, who rise from their graves and move toward the island threatening the villagers. The novel follows Stanley and Daisy as they race to uncover the casket's secrets and stop the undead pirates from reaching the shore.