Foreword

During a routine security patrol in the Underground, Flit stumbles across a Registered Derivate whose team underestimated the dangers of the dank underground tunnels. She brings the Registered Derivate, KC-847, back to the Underground and he is given a new chance to live a life free of the Government's control. But just as he is settling in, a dangerous mystery threatens the very foundations of his new life. Flit, never one to let a hunch go, drags him along on an investigation that will change the trajectory of Derivate-kind forever...

*Thanks for @AuthorClarke for the awesome cover*