Jim Ellison can't explain how Warren Chapel, a permanent patient at a maximum-security mental institution, has detailed firsthand knowledge of a string of grisly murders occurring around Cascade.

When the federal mint is targeted for a major heist, Ellison and Sandburg are joined by Megan Conner, a visiting police officer from Australia, as they prepare to apprehend the robbers in the act.

Blair, Banks, and Megan may be Jim's only hope of overcoming the superhuman stalemate and returning Cascade to a one sentinel town.

When Internal Affairs accuses him of stealing money captured in local drug busts, Ellison finds that during this case he's forced to answer the hard questions instead of asking them.