3.5 stars. I've been reading this series as a bedtime story to my boys for most of this year, and the back cover claims this is the "fifth, final, fantastic finale..." I hope so, because as is true for many of the series I read, the premise wears a bit thin. I suspect if I had more of a break between reading each title in the series, I would have liked them even more. Still, this is a good book. 
 Bosch has a wonderful, irreverent and humorous style to his writing that I find greatly appealing. That continues in this book, but to a lesser extent, it seems, than in the others. There are certainly fewer footnotes (which I love!) than the other titles. 
 By now I am very familiar with the characters, and they feel like old friends. This time they get into more trouble than usual, involving a museum, a mummy, illegal activities galore and Lord Pharaoh (again), all in the name of finding The Secret. 
 I am pleased to say that The Secret is finally kinda sorta revealed. The last chapter tries to tie it a bit more together, and I appreciated that. Then came the Epilogue, one of my favorite parts about the whole book...but then again, I really like Bosch's self-referential asides. 
 I will heartily read more books by this author, though I am not so interested in reading more in this series. The ending was perfect (for me), and I want it to be done now! Then again, this would make a nifty movie...