The Hills Have Spies (Family Spies #1)

Heralds Mags and Amily must continue to protect the realm of Valdemar while raising their children and preparing them to follow in their footsteps ... The oldest, Justyn, has the Gift of animal Mindspeech--he can talk to animals and persuade them to act as he wishes. Justyn's dream is to follow in his father's footsteps as a Herald Spy, but has yet to be Chosen by his horse companion ... Mags proposes that Justyn join a group of traveling players and musicians, to get experience away from home and out in the world. Justyn joins the troupe, and he starts collecting information for his father. And the patterns he finds are unsettling.