I think it was Thomas. He was very likely threatened with them going after Justine. It may have been a fake Thomas killing the Svaltalf, escaping and real Thomas being clueless and captured by the Svaltalves while visiting Harry's place.

I think this being, in anyway, a Fomor plot is shaky.  The Fomor have literally 0 reasons to care about infighting with the Accords Nations.  They are kicking off their war, and they don't care about what the other side is doing.  Thus there are no reasons for the Fomor to be behind Justine's or Thomas' actions. 

Eb using some black magic on the other hand to force Thomas is an interesting theory. This would cause Harry to lose any trust he has in Eb.  Plus it would suit Eb's plans.  He hates the White Court.  Them being destroyed or very hurt in a war would very much please him.  Though you have to ask the question of why are the feds watching Justine?  They shouldn't even have her on their radar.  So maybe its something else to do with the government.  That whole plotline makes no sense because no one really benefits from it.  And I don't see it being resolved very well in Battlegrounds because that book will take place during 1 day if not just the night.  Thomas will still be locked up for most if not all the book.  All the signs are pointing to Justine causing the assassination, but yet again we are left with no reasons or even any clues about a possible reason why this would happen.  I just hope we get payoff otherwise it will be a stupid plotline that went nowhere and has no relevance.

I think the Fomor or their allies threatened Thomas by saying the would go after pregnent Justine. They see the Svartalves as a threat and want payback for killing one of their nobles in Bombshells.
I think they see Dresden as a threat and sent Rudolph to go after Murphy and Harry to distract him. Having Thomas be in trouble also distracts Dresden. As Marcone said, they want to divide their enemies and take them out one at a time. It could be Cowl or Outsiders. They seem to be Fomor allies. They want Dresden and the Svartalves to be at odds too.

Harry could buy half a dozen classic VW beetles; pre-1970 models, so he could always have a working car on hand, even if Mike was repairing one or two others that had been knocked out, and keep two or three at Mike's as part cars.

The problem is the VW Beetle is very small and under powered. Harry and Mouse are big. I would say an old Checker Marathon. Large, rugged, reliable and a very simple car. This would be a good solution but Harry seems to like to do things the hard way. A car that is too small and unheated showers for example.

    I think the moral of the story is there are monsters and then there are monsters..  Goodman is a monster,  he isn't human, but he still has humanity.  I don't think he is free to do what he'd like to do, so he takes payment, one dollar.  One would have to look further back into the history of skin changers, but if I remember correctly, they are servants not free lancers.  Also we all know that way back when, they also were not evil..  If I am correct it would explain a lot.

Then we have Marcone, the real monster here, though he is very human.  Yes, he has a thing about kids because one was collateral damage when his pulled a hit job many years ago..  However he draws the line at taking out those adults who'd make use of those kids because those adults were useful to him in his business..  Now that is a cold blooded monster.

I think Marcone would have taken out the pedophiles who worked for him. Marcone was upset because it was not Goodman Grey's place to take out people who worked for Marcone without Marcone's blessing. It is Marcone's place to take them out. Sort of like when Caesar was upset with Ptolemy XII for having his men kill Pompey, who was at war with Caesar. Caesar would have had killed Pompey, but having Egyptian foreigners kill a famous Roman was not to be tolerated. This helped push Caesar to side with Cleopatra against Ptolemy.

I would guess that the WC did not know of Justin being a Warlock because he was a Warden and WC Wizard in good standing. When Harry killed Justin. The WC then investigated Justin (and Harry's claims) and found evidence that he was a Warlock. Sort of like a girl escapes from a serial killer's basement and tells the police. That serial killer was a citizen in good standing and no one looked at some of the minor suspicious things he did, even the neighbors. When the truth comes out then the authorities investigate and find the evidence.

I think the Fomor are loosing lots of minions and rarely powerful Fomor. The White Council has few minions and lesser allies. So the White Council could be taking losses in much lower numbers but can't afford to lose 20 wizards to 500 minions and the Fomor count themselves ahead. Nemesis could be influencing some of the Fomor leaders so they are doing things not in their long term interests. Look what the Red Court did. They got themselves wiped out. The Black Council (Team Outsider) is trying to get the local major powers to fight each other and weaken or destroy each other. The White Council was supposed to be wiped out or crippled and the Red Court weakend. It was mentioned that the good guys took lots of losses in Peace Talks, perhaps the Fomor are now crippled and no longer a major player.

Molly without Harry would have become a warlock, then decapitated.  Her becoming the Winter Lady was based on her Choice to get involved with Leanansidhe.  As Jim said, the deals Sidhe make with you are designed to get you more, and more tangled up with them. 

It's not that Harry Dresden the man is a problem, it's that the world he lives in is so dangerous, and complicated.  If you spend time with someone like that you're bound to get dragged into that dangerous world.

I agree, just like dating James Bond is dangerous. Not because James Bond is a bad guy, but because he has so many dangerous enemies. Lots of his lovers get killed or go through some rough times.

They built the Empire State building from scratch in a little over a year. That was back in 1930. I can see a small castle/keep being built in 6 months. Marcone may have had some supernatural help on the construction also.