Stolen voices. Book 4. Philip D.

Help your brother and sister to defeat the kidnapper of screams!

Molly and Jack is incredibly lucky: real scientists-researchers arrived at the Rivenstorm. But someone on the island seeks to interfere with expeditions. Brother and sister want to find out what is happening. Near the scene of excavations, the guys hear the mysterious whisper and stumble upon... unicorn! It turns out that archaeologists damaged the burial of the kidnapper of screams. And the unicorn is taken to help the guys win the witch. To do this, they need to find ancient runes and challenge the kidnapper! Or all the inhabitants of the island will lose their voices...