"Did you need something?"
It wasn't a secret that the least criminal, lowest on the radar member of the Crows was in fact the son of a member of Kerch's Merchant Council, Jan Van Eck. However, it tended to stay as something left unsaid, lest a pushy or aggressive gang member be swiftly knocked out of commission by perhaps Kaz or Jesper.
Wylan preferred, as much as he loved his people, to stick to what he does best. If what he does best happened to be creating explosives that could tear down the Council of Tidemaker's tower, so be it.
Kaz had gotten him acquainted to a laboratory, and with whatever money recent jobs had hauled in, bought the equipment needed to create some explosives and alchemical poisons that could really do damage.
What was a secret, however, was the location of the laboratory. Which is why Wylan was all the more confused as to why you walked in.