Why teach a dog to speak if no one will listen to him? XK9 Rex was bio-engineered and cyber-enhanced to be the most capable police dog money could buy. He even has a collar-mounted vocalizer. But then a catastrophic explosion on a space dock sidelines his human partner. Now his new masters on Rana Station assume Rex has nothing to say. But Rex's keen nose picked up a vital clue about the explosion. He must get the investigators...