Killing Monarchs

Two dead bodies and too many coincidences to ignore—in this outdoors mystery, special agent Sam Rivers must stop a murderous conspiracy.

As a special agent for the US Fish & Wildlife Service, Sam Rivers has researched and studied a variety of animals. He’s visiting sixth graders at Hopkins Elementary to share photographs of the Monarch butterfly—and he’s brought along his drug-sniffing wolfdog, Gray, to give students a demonstration of his partner’s remarkable skills.

Gray finds a sample dr...