CREEPING MAN, THE - Top Readers Level 5

"When Watson rushes to Baker Street only to find it is for a case about a professor's misbehaving dog, he is not pleased.
What he doesn't know is that Holmes is really investigating the professor's seriously strange behaviour - crawling through the hallways, hiding secret letters and even climbing the side of his house.
No one knows why or how it is happening, but one thing is for sure: there's something creepy about Professor Presbury ..."