I always forget how much less interesting this one is than Pegasus in Flight. It starts with similar multiple POVs and then narrows down pretty much entirely to Peter's story. The sabotage plot is a surprise, but it just trails off mid-solve, leaving about a huge chunk of book to Peter revolutionizing gestalt/telekinesis/space travel. Which is theoretically neat - but if you've read any of the Tower books, you ALREADY KNOW ALL OF THIS. 
 Also, criminal lack of Tirla and she is the best.