Armando runs out of time to reveal a powerful truth in the way he preferred, in The Architect’s Guardian, Chapter 38. Here’s an excerpt:
A sharp spike of pain flew through Izdahl’s head and he felt his energy falter. He let go of Armando and tried to sit up, as another wave of pain sped through him. He shook his head clear and realized Armando was looking at him with alarm in his eyes.