Chronicles of Ror Necessary Lies

The story of Captain Ror continues in book three, Necessary Lies.
After rescuing Sarah Gold from the caves, Ror took her to Shadow Falls where she was reunited with friends from Earth. Conflict arose and it was decided that Ror, Sarah and another Black Hair captain named Brecht would find the lair of the Winged Beasts using hang gliders. Catastrophe befalls the trio as Sarah's hang glider dismantles while in the air and Ror is captured. After weeks of torture he escapes only to be subdued by former Rested tribesmen inside a frozen river.

Hearing that Sarah has fallen, Detective Ron Smith ignores the warnings of the Black Hair tribe and goes into the wilderness hoping to find her alive. What he finds, however, is completely unimaginable and ends up changing his opinion of who could have actually killed Treetop, the dead corpse back on Earth.
the dead corpse back on Earth.