Notes

276 p. : ill. Summary: George Feather spends his day cleaning chimneys, or he did, until he discovers the Bureau of Mysteries, investigative codebreakers who live between the floors of the Brass Castle Hotel. When the Bureau learns of the Clockwork Octopus Society's evil plans, George is recruited to stop the villains from wreaking havoc on the city. Along with his partner, Imp, George follows the trail of evidence and cracks the codes that each suspect leaves behind, while chased by mechanical insects, overcome by horrible smells and trapped in train tunnels. But will they be able to save the city in time?