Warriors - The Canta Libre Trilogy, #3

First contact with alien species had been a disaster, opening a Pandora's box of trouble for humanity. Hunted by alien warships, the survivors of the crew of the Canta Libre travel back to Earth, only to discover a ferocious global war has broken out in their absence. Earth's governments have branded them traitors and they too are hunting Captain Ashton and his crew for the alien technology they are supposed to have brought back.
Fighting for their lives against old allies and new enemies, only the Canta Libre, with its rag-tag crew of scientists and civilians, can bring the world the weapon it needs to defeat the alien warships hot on their tail. But the strange reality-bending force they have on board is a two-edged sword and, in the end, the Canta Libre may be the biggest threat to human survival of them all.