Some final books, movies, or shows have unfulfilling endings. The Sopranos ending broke televisions (literally) across the country. The Seinfeld ending was a convoluted mess. The Bobiverse trilogy left me feeling flat, and then they added a 4th book. This story provided what none of them did, a satisfying ending.
No spoilers, so without going into detail, Oren and the humans have several seemingly impossible tasks ahead of them. Some are accomplished in unforeseen ways, others with brute force, and some are even left unattained. Through it all, the story remains entertaining and exciting.
Jeff Hays and the SBT crew did an amazing job, as always. There are times in some of their works that the sound effects can be distracting, and there is one brief instance in this book when the sounds overshadow the dialogue, but the performance is otherwise terrific.