When you return to the Karak, the first thing you do is go through your reports from the EIC to check for any signs of Marienburger mischief. You're quite relieved to find that everything appears normal, and the EIC's grip on the northern bank of the Aver almost complete. Since you've got all the paperwork out anyway, you move on to checking through the rest of the reports from up north, starting with the Hochlander's adventures in Talabecland, and find yourself quite surprised. You'd expected the Templars of Sigmar to descend upon the innocent populace of Talabecland like a Khornate Beastherd on the warpath, but all indications are that they quickly and efficiently winnowed through the citizens of note with no more threats than necessary and systematically narrowed the suspects down until they identified the culprits as a loose collection of allied burghers in Krugenheim and Ossino, who thought they could avoid suspicion by pointing investigators back and forth between the two towns until they gave up. They thought wrong, and ended up answering to the pyres.
The Hochlander's contribution to the project was minimal, though if his reports are accurate you can't find fault with his attempt, it was simply a matter of the Witch Hunters had both more manpower and a larger information network in the form of the Church of Sigmar. But he did manage to keep up with the investigation and give every appearance of helpful cooperation, as well as aiding the Witch Hunters with transportation upon EIC wagons and boats, and has come away from the project with a significant list of contacts within the Templars of Sigmar. Which is the sort of thing that might come in very handy in the future, even if you're not their biggest fan.
Reading through the reports from the rest of the EIC, it seems the Army of Stirland is making ready to break camp and tighten the encirclement of the vampire-controlled towns with the Spring thaw. Personally, you'd think it would be best to allow the lack of income time to really wear on them, but Roswita has demonstrated a definite preference to act quickly in Sylvania, and so far it seems mostly to be working out for her.
The only other oddity is reports from Talabecland that there's been a fairly significant increase in the worship of Karnos, the local God of the Hunt. Unusual, but as he's not proscribed and seems relatively harmless, it's probably not anything to worry about.