It's a tiny county park in the farthest corner of Wisconsin. Two men are dead and a deputy sheriff is badly wounded. The dead men? One is a mystery. The other is Kat's former commanding officer in Germany – a man she hasn't seen in years. The FBI wants to talk to Kat. Kat Johnson has retired after twenty years with the military police and now operates a business in northern Wisconsin. Northwoods Experiences is a chance for women to gather and explore outdoor options from wildlife photography to fly fishing and bird watching.
But the FBI is more interested in Kat's former job and her time in Germany's Fulda Gap. Nuclear mines were used to bar the way of potential Soviet invaders. Now a YouTube series is tracing those mines. If Kat wants to find out why her old friend was killed, she needs to travel back to Fulda and investigate those YouTubers.