I believe Jim said he had a grudge and implied the limp was from that, but Jim doesn’t always tell the truth even on small matters if it is going to impact upon a major plot.
Hmmm I suspect each of the Great Lakes supporters tell a similar story:-
https://www.livescience.com/32011-lake-michigan.htmlWikipedia is surprising silent on this, suggesting the fact is hotly contested amongst rock nerds of the universities bordering the Great Lakes , and they got fed up with the pages constantly being changed.
Jim has characters who were there though, so he can say what he wants and pick the theory he wants until someone invents timetravel and disproves him.
If Ferro is being lured out into the mortal world then in Skin Game the Ferro vault in Marcone’s bank might be an Easter Egg for this, if Hades vault in the Bank leads to Hades Vault in the Never Never, then it stands to reason the same applies to Ferro’s Vault leading to his Hoard in the Never Never. What if the gift to Ferro in Grave Peril presented by Cowl is the lure and the access through the vault the way to bring Ferro fully out?
I have posited Cowl is Nameless, and Nameless is Marcone’s top lawyer, and was part of Winter Until Mab shut him out after the attack on Arctis Tor. He might have been planning this all along from GP. We saw the problems the gift to Lea created for Winter, and Cowl’s boast in Dead Beat when Harry connects him to GP. Mab merely saw the opportunity to put Nicky in his place and to retrieve the artifacts, and inadvertently came to the same plan as cowl/nameless but for a different subject. That would connect it into the wider narrative that Cowl/The Black Council have been involved in all of Harry’s major cases to some degree, SG bothered me because there didn’t appear to be a link, The Law and forthcoming Dragon book mat provide that link. Would Marcone’s top lawyer have access to his bank? and through them the vaults? I think so. If Cowl is Nameless it suggests that Nameless has a reason to continue to work for Marcone, why bother otherwise?
The Law exists to create a nexus between Winter and Marcone and Nameless and Kemmler (who Cowl and Nameless both worked with, not for) it is likely that is far more significant than is realised and why a ‘surprise’ Novella was required. It contains points relevant to the wider plot.
We only see Ferro in GP and PT/BG we get the mention in SG, are there any other references? Could Demonreach contain a fully emerged Ferro?