This is a very good book. I like it the best of the four I have read so far. While some things don't completely make sense, nothing comes across as wacky like in the other books. The idea of searching for the Abominable Snowman may seem silly, but I found it plausible. Jason is searching for evidence of the snowman because he is writing his doctoral thesis on the legend of the snowman. Now that is an odd idea for a thesis, but if the reader accepts that idea, then it makes sense for James to research the snowman and look for evidence of it near Calgary.
I enjoyed this book as much as I did the better Biff Brewster books.
On page 38, Mr. Forrest expresses concern for Brad's safety. This is interesting, since Mr. Forrest has not been at all worried about Brad's safety in the previous books, despite how dangerous Brad's adventures are.
On page 144, Brad must swim 14 miles to shore, and the reader is told that "the few miles to shore should be nothing for him." Brad must be quite an athlete.
This book is a little wacky but is approximately as good as the average Biff Brewster book. I enjoyed the story.