Boyd McCloyd and the Time-Travelling King

How can two Boyd McCloyds exist in the exact same place at the exact same time? The answer: A TIME MACHINE! But a time machine in the wrong hands can be a dangerous thing! So, of course, someone has upset the laws of physics and gone back in time to cause a bit of a ruckus. That someone happens to be a singer that everyone thought was dead, but was, in reality, a member of The Conspiricetti and was bored enough to wonder what might happen if he went back in time to insert himself into historical events. Thus, Boyd and the rest of the Acclimated Spooks crew has to stop him. The only problem is that with every instance in which they travel back, the future becomes more and more jumbled. Can you fix the future by going back into the past? A thirteen-year old, the world's smartest fifth grader, a yeti, a crocodile, and an Amazon are about to find out...