The Case of the Displaced Detective: The Arrival is a science fiction mystery in which the brilliant hyperspatial physicist, Dr. Skye Chadwick, discovers the existence of alternate realities, often populated by characters we consider only literary. Her secret project, Project: Tesseract, hidden deep under Schriever AFB, identifies Continuum 114, where Sherlock Holmes was supposed to perish alongside Moriarty at the Reichenbach Falls.

In a knee-jerk reaction, Skye rescues Holmes, who inadvertently travels through the wormhole to our universe, while his enemy plunges to his death. Unable to return without causing devastating continuum collapse, Holmes must stay in our world and adapt.

Meanwhile, the Schriever AFB Department of Security uncovers a spy ring working to extract the details of—and possibly sabotage—Project: Tesseract. Can Chadwick help Holmes get up to speed with modern investigative techniques in time to stop the spies? Will Holmes thrive in our modern world? Is Chadwick now Holmes' new "Watson"—or more? And what happens next?