Payment

Aldrich brought the dead Robert back to life.

From the brief contact, and even from Gary's memories, it wouldn't have been possible for him to use his Class-specific Skill on Robert. So Aldrich first lured the Leader of the Red-Jackets and fed him to Sha, gaining all his memories while doing so. And having the access to these memories not only helped him execute his authority of Dream Necromancer, but it also told him of many secrets.

Aldrich got to know the trafficking gang 'Red-Jackets', wanted in the better part of 3rd Quadrant, wasn't just a local lord backed up by the Nobles. There was a mightier organization behind them, and the red jackets were just a small part of the bigger picture. But even Viscount Robert didn't know the full extent or the name of that organization.