The message arrived on a Tuesday, three weeks after the midwinter gathering.

Not through the ground channels. Not through the eastern delegation's formal communication network. Through the broadcast itself, which should not have been possible because the broadcast was Marina's frequency, not a receiving channel, and nothing should have been able to use it in reverse without her awareness.

She felt it at the boundary stones during her morning check. A pulse that was not the anchor's acknowledgment and not the pack wolves' background frequency and not any of the forty-seven identified hybrid wolves whose configurations she had been monitoring through the broadcast for months.

Something using her broadcast as...