Phantom Universe (Summer Chronicles #1)

Sold into slavery to pirates at the young age of four, Summer learns to survive the rough seas of subterfuge and thieves through silence. When the boat she's lived on most of her life is destroyed, Summer finds herself washed up on the shore of a new world, a phantom universe full of the bizarre and extraordinary. She meets Gage, the one boy who understands the girl with no speech. But when their lives are put on the line, will Summer finally call out? Or will all be lost in the fathomless depth of silence?