
Jim's friend Roger Corman, a U.S. Marshall, is killed in a car bombing before he can reveal the name of a corrupt marshall that he's uncovered. Ellison must ferret out the traitor but finds his hands tied when the U.S. Marshalls themselves take over the investigation.
In the Peruvian jungle, a Chopec Sentinel named Incacha is enraged by the pollution of his land by a contaminated oil well and the murder of one of his tribesman by an employee of the Cyclops Oil Co. ... Back in Cascade, Ellison foils a burglary but accidentally shoots a security guard. Luckily, the guard is OK, but Ellison's dismay causes his Sentinel powers to disappear.
When basketball players on the Cascade Jaguars start turning up dead, Jim must calculate the difference between a good shot and a deadly one.