From the front page of the PDF:
With knowledge comes power, and power comes with a price. A former adversary’s descent into madness prompts you to set out on a mission of intrigue and subterfuge, for the good of Cormyr. But with war on the horizon, the price for knowledge is high indeed. What will you risk to aid the Crown? A one-round Living Forgotten Realms adventure for characters of the Heroic tier (character levels 1-10).
This adventure takes place after the events described in CORE2-12 The Sschinldyryn Heresy, PREQ3-1 Shrouded Visions and ADAP2-3 That Which Never Sleeps. This adventure is an optional prelude to the Origins 2013 Battle Interactive ADCP5-1 Best Defense. This adventure is role-playing intensive.