After the murder of a US Senator, Pinkerton Detective Simms is tasked with bringing the killer to justice.This would be a simple case for someone as determined and experienced as Simms, but shadowing him is someone far more dangerous and deadly than mere hired murderers.Across the unforgiving Territories comes a spectre of death, and once again Simms finds himself in a struggle for survival against an old enemy who will stop at nothing to achieve his goal: the death of Detective Simms.