After sending the skeletal noble off, Annan leaned against the pillow and turned to look at the moon outside the window, narrowing his eyes slightly.
Although the skeletal noble had not refused his call and had indeed answered his questions... the "secrets" he mentioned had very deliberately avoided those critical issues—especially those that could touch upon himself.
For example, what kind of organization the Dead Alliance really is, how he knows the Pale Princess, what they plan to do, and why they are currently scattered...
He directly played dumb about questions that might involve himself, including those precursory ones that could lead to such inquiries, not mentioning a single word about them.