OOC: Considering the fact that Highbrow have a lot of HP, if I was him, I would take teh risk to spend two to jurry-rig a device. Pretty simple: Mind Reading with Subtle Power Feat, so we can force interrogation without the target knowing. That mean it would cost Rank + 1 (for the Subtle PF). If we want to spend one HP on the roll if needed, we can have at least 23 as a result (+10 for Highbrow skill, +2 for Cedric aid, +11 for the minimal roll), which mean with a DC of 15 + PP cost, we can have a device at rank 7, which is pretty fine with me. With that, we should have no problem to interrogate our targets.
We go in the region, use the device during the scene it can hold to get as much information as we can and hope after that, we only need actions...