Armando goes into a spiral of panic, when he receives an unexpected invitation from Kelcho Dagmar Havad, in The Architect’s Guardian, Chapter 46. Here’s an excerpt:
Armando was reading the invitation again, as dread coursed through him. He wasn’t sure if his unease was because of who had sent the request or because of how it had arrived. Dagmar had dispatched Elij, his highest ranking assistant, to personally deliver a request to join him for dinner that weekend. The invitation bearing the seal of the Havad clan and the old-fashioned delivery method both carried gravity.