. . "Caribbean Area" . . "Juvenile Literature." . . "Novela estadounidense de aventuras Siglo XX." . . "Novela estadounidense Siglo XX." . . . . "The twins go to Jamaica on a cruise ship and help a friend look for pirate treasure." . . . . . "Fiction"@en . "Fiction" . . "Mystery on the deep blue sea"@en . "Mystery on the deep blue sea" . . "The Bobbsey Twins mystery on the deep blue sea" . . . . . . "The bobbsey twins' mystery on the deep blue sea" . "Bobbsey twins classic edition" . "Mystery fiction"@en . "Juvenile works"@en . . "Juvenile works" . . . . . "The Bobbsey twins' mystery on the deep blue sea" . . "The Bobbsey twins' mystery on the deep blue sea"@en . . . . . . . . . "Mrs. Bobbsey and the twins visit Jamaica and learn that their friend, Phil Henderson, has disappeared. During their search for Phil, the twins stumble across pirate treasure." . . . "Join the Bobbseys as they set sail to the West Indies -- and discover buried treasure!"@en . "The Bobbsey twins mystery on the deep blue sea"@en . . "Nan awoke early the next morning and went outside. As she started to walk towards the boys' tent she saw a dagger stuck in the ground."@en . .