From publisher blurb:
Citadel of Terror is a Fantasy RPG adventure module written by Paul Riegel-Green and Ben Burns for Fifth Edition (5E) and designed for character levels 1-4.
Spring time has arrived, the fields planted, the trade routes are opening and the Orc raids will be coming soon. It also means the arrival of the mysterious but powerful mage Melius. But this year, he has yet to make his appearance. What chance does the small city of Adwick have against the ravaging hordes of Orcs without the wizard's assistance. Every day that slips by, causes the leaders worry and concern.
You and your small band of adventurers have been tasked with traveling through the abandoned ruins of Rochdale, then into the swamp known as The Moors. To seek out Melius' tower and discover what has become of the wizard. What evils lurk in the ruins? What dangers will The Moors hide? What will you find at the Citadel of Terror?