Title: Echo in time
Description: Taylor and Joseph are part of a team sent to Traventon to destroy the QGPs and, perhaps, Reilly, on a mission that could endanger Taylor's twin and Joseph's girlfriend, Sheridan, but reunite them with Joseph's supposedly dead twin, Echo.
Subjects: Science fiction, Twins, Brothers, Resistance to Government, Sisters, Time travel, Fiction, Children's fiction, Twins, fiction, Adventure and adventurers, fiction, Time travel, fiction, Sisters, fiction, Brothers and sisters, fiction