It’s a brutal winter in Des Moines, Iowa, and the city is gripped by fear. A serial attacker known as the Sin Eater is stalking women and has just struck again. It’s a tough time and a tough place for Riley Fisher, a former small-town sergeant, to be reporting for duty as an FBI agent on her first assignment. Teamed with a man she’s not sure she can trust and struggling to prove herself --- while fighting the pull of her old life and family dramas --- Riley is tasked with investigating a vicious death threat against the newly elected female state governor. Gradually, she traces a disturbing connection between this case and the hunt for the Sin Eater. Through snow, ice, violence and lies, Riley Fisher is drawn towards a terrifying revelation.

It starts with a body --- a young woman found dead in an Iowa cornfield, on one of the few family farms still managing to compete with the giants of Big Agriculture. When Sergeant Riley Fisher, newly promoted to head of investigations for the Black Hawk County Sheriff’s Office, arrives on the scene, an already horrific crime becomes personal when she discovers the victim was a childhood friend, connected to a dark past she thought she’d left behind. The investigation grows complicated as more victims are found. Drawn deeper in, Riley soon discovers implications far beyond her Midwest town.