Voices (Intrepid Women Book 4)

Horses have been programmed to kill.
Forced to return to her husband before evil takes another life, Rachel agrees to bizarre terms and then all hell breaks loose.
No way Quinn is going to trust his wife again, but neither is he willing to let her go, and living such a complicated game puts incredible stress on more than just the two of them. His security specialist family have his back and are confident they can stop the madness--right up until someone else almost dies.