Agent Emerson appears in Book 2 (Catch your Death). He is a field agent of Spectrum who was one of the agents assisting the test where agents have to follow various routes to arrive at Spectrum's base camp in the woods, with other challenges in the middle (e.g. swimming across rivers, adapting to the environment...)in three days. Ruby fails the test as she sustains an injury on her left leg and loses her glasses, causing her to arrive late by thirteen hours. "Emerson didn't seem like such a hard nut after all - he could cook at least" Ruby remarks as she smells the stew Emerson was cooking for her. According to LB, Emerson waited around at the base camp for twelve hours, fifty-seven minutes and three seconds (by choice) to bring Ruby in, so he probably isn't such a hard nut after all.