Maybe put that in the book? There's this guy I watch on YouTube who says if fans have to come up with answers to plot holes, that's just bad writing. Now plot holes is doing a lot of heavy lifting in that sentence, but depending on one's definition of plot hole, I agree.
I find a whole lot of plot holes in Peace Talks and Battle Ground when it comes to it. However not
so much in Death Masks, maybe because of my biology background, and maybe because I've seen movies with similar plots. So to me it wasn't too hard to connect the dots as far as the plague goes, but as I said, aside from that, the book seemed to go all over the place. Maybe because Jim was using it to introduce things that would be important down the road.
Susan and Harry have had sex in the past, but this time neither used protection and it was after she was half turned.. Oh in Changes a little bundle of joy just happens to turn up. One other point about that, and I am adding it because it crossed my mind this morning. On one hand Susan seemed to resent Harry getting her pregnant and didn't let him know to keep the child safe... But then she keeps the kid near by her, and names it after Harry's mother for crap sake.. Hello Princess of the Obvious, if it wasn't hard for Arianna to figure out that Eb and Margaret were related, it isn't big a step for her to figure out a kid of Susan's named Maggie was related.. Death Masks also sets up Martin to be the double crossing heavy, which he was down the line. He also encouraged Susan to be with the injured Harry, knowing with the smell of blood and all.. Well, you know.. Shiro hands over his Sword to Harry for safe keeping, not to be a Knight, but as caretaker.. The Sword does nothing until Small Favor which sets Harry up further as custodian when he gains the Sword of Love as well, which also becomes important in Changes, drags Murphy into the mix which climaxes several books later in Skin Game when she breaks the Sword of Faith, and we know where that all led.. Oh also introduces the power of the Artifacts, though we find out later in Skin Game that that Shroud was a fake, the one that Harry nabbed, isn't.