In Storm Front after Harry had a lock of hair removed, and he was out of answer's he had nowhere to go. Either shadowman would kill him when the next storm rolled in, or the Senior Council would when Morgan convinced them that Harry was behind everything. So he began walking aimlessly for several hours and ended up at Linda Randall's apartment without even meaning to go there. He also notes a bird chirping near by (not sure if it means anything or not). This led to him finding a new clue under her bed which saved his life in the end.
Anyways I do believe that earlier in the book the bread crumbs may have been laid, and information from future books could lead the fan to realize that someone was working behind the scenes to help Harry. The crumbs laid earlier are:
1. If you know someone's Name you can plant a subliminal message to cause them to come to you as Harry did with Toot.
2. Harry says that several wizards on the Senior Council do have his full Name.
3. Members of the Senior Council knew of Harry's predicament because Morgan had called for a meeting of the Senior Council in Chicago because of Harry.
4. Harry wonders around aimlessly and just happens to end up at her apartment. Seems to me that it's conceivable that someone used his Name to get him there.
There is only one person I can think of that could have what's required to pull all of this off, and that's Odin. He'd need Harry's Name, and the foresight as to why Harry could even solve anything by going there. He had knowledge of Harry, a reason to help him, and limitations that stop him from outright telling him. I think Odin would know of Dresden because he is a Starborn, his mother was known to the Fae, his Godmother is Leah, and it's hinted that Dresden is important to people in the know. Those are reasons enough for him to get involved but more than that I think because he has a connection to lightning, and storm's that he'd be personally offended by someone using his domain of power to channel black magic. So he probably has knowledge of Dresden, but also some reasons to help him. Also because of the Rules he probably couldn't just tell him which is why he needed to tilt the scales a little. Harry could still have failed, but he'd have been given a little nudge to point him in the right direction. In future books this is consistent with powerful Being's. They can help a little but not solve the problems for mortals.
After writing all this it slaps me in the face that Leah could also have done it... Doh! Well anyways I still think he had help!
There are other indicators that someone calmed him down through his pentacle necklace (his mom?) later on too...
