In the book Changes, a hitman named Stevie D. was hired by someone with Susan's description to try to kill Harry. After finishing the book, I'm still unclear as to the motivation behind this and whether or not it was actually Susan, the Eebs, or someone else.
Harry postulates that the Eebs were behind it and altered Stevie D.'s memory to think it was Susan, but he has further questions that are never answered, emphasis mine:
Esmerelda's blue and green eyes could have made Stevie remember being hired by Mister Snuffleupagus, if that was what she wanted. But how would she have known where to find me? Had they somehow managed to tail Sanya back to the church from my apartment without being noticed by Mouse?
And just where the hell were Susan and Martin? They'd had more than enough time to get here. So why weren't they?
The following scenes answer the question of where Susan and Martin were (caught by the FBI), but as far as I can tell, the question of who hired Stevie D. and how he found Harry is still unresolved. I was thinking that perhaps it could've been Martin, but that makes no sense, seeing as Martin's orchestrations required Harry to be present at the temple, which Harry even notes himself:
Everything he had done, I realized, he had done for one reason: to be sure that I was standing here when it happened. To give me a chance to change everything.
So it stands to reason that hiring a hitman to try to take out Harry would be counter to that purpose. What am I missing? Is there something in the book that resolves this but I just didn't notice it, or is this a (seemingly) dangling loose end?