Strikes, blackmail, and murder plague Beatrix amid growing unrest following the supremacist ideologies of World War II.

Beatrix Patterson has faced monsters before, but in a world teetering on the edge of social change, she comes up against her most complicated case yet. In one chaotic morning, her friend has been arrested following a fight during a strike at the railroad, the railroad owner was found murdered, and another close friend admits to being blackmailed.

Amid growing tensions between the Union Pacific Railroad and workers' strikes, Beatrix must go undercover before more people are killed or injured. But as she dives into this investigation, she finds one consistent group at the center.

In order to bring down the racial supremacist group digging its claws into Santa Barbara, California, she must put her intense loathing aside to stop the threat before it can reach Thomas, their baby girl Birdy, and the life they're building. With deadly secrets everywhere she turns, Beatrix has to keep her cards close to her chest if she hopes to escape this case unscathed.