I watched a discussion between some authors in which this author took part. I was intrigued by his work and got hold of this one right away. The book is, I think, more mid-grade than young adult. The protagonist, Toby, is 13, but intended readers are more likely around the 11 mark.
Toby is a well put together character. He longs for his dad's regard, but his dad is too wrapped up himself to bother himself with his son. He absorbs attitudes and ways of interacting that make him rude and unpopular. But then he is flung into an adventure in another world, witnesses a murder, and then struggles to find his way home.
Many classic story elements from a writer who knows how to construct a story. There is some humour, plenty of adventure and plenty that the intended audience will enjoy. Some nuance in the characters, but it's a children's story. All the same, there is character transformation for Toby, and something very interesting going on with the nasty little shadow that kicks off the story.
This won't be one of my all time favourites, but it was good enough for me to read something else from this author.