Secret Water

John, Susan, Titty and Roger, the crew of the Swallow, take on the job of mapping the mass of small islands round Pin Mill while living on the biggest one. But who are the mysterious savages who lurk in the islands - and is the tribal totem they find in their campsite a threat of attack. ?

John, Susan, Titty si Roger, echipajul Swallow, isi asuma sarcina de a cartografi masa de insule mici din jurul Pin Mill in timp ce traiesc pe cea mai mare. Dar cine sunt salbaticii misteriosi care pandesc in insule - si este totemul tribal pe care il gasesc in tabara lor o amenintare de atac.