Dark Secret is the second mission in Return to Castle Wolfenstein.
Having escaped from Castle Wolfenstein, B.J. Blazkowicz meets up with his Kreisau contact, Kessler, and infiltrates the town of Wulfburg. There, he discovers the entrance to a network of ancient crypts, which are being excavated by the Nazis in order to find the remains of a Dark Knight.
Unfortunately, the Nazis' meddling has unleashed ancient dark powers and awakened hordes of ravenous Undead, which attack anything in sight. Fighting his way through the crypts, Blazkowicz eventually reaches an ancient defiled church and faces the lethal Elite Guard, as he races to stop the Nazis from acquiring another ancient artifact - the Dagger of Warding.
There are five different parts of this mission. They are detailed below:
Part 1: VillageEdit
- Infiltrate the village.
- Locate the SS Paranormal Division's archaeological dig site.
Part 2: CatacombsEdit
- Locate Professor Zemph's Journal.
- Pursue SS Paranormal Personnel through the catacombs.
Part 3: CryptEdit
- Navigate the catacombs to the Wulfburg Church entrance.
Part 4: The Defiled ChurchEdit
- Infiltrate Wulfburg Church.
- Pursue Helga von Bulow to the ruined cathedral.
- Eliminate all of Von Bulow's personal "Elite Guards".
Part 5: TombEdit
| Cursed Sands|
|Ras el-Hadid · Inner City · Headquarters · Ancient Ruins · Ritual Chamber · Burial Tombs · Eye of Anubis|
|Ominous Rumors||Escape! · Castle Keep · Tram Ride|
|Dark Secret||Village · Catacombs · Crypt · The Defiled Church · Tomb|
|Weapons of Vengeance||Forest Compound · Rocket Base · Radar Installation · Air Base Assault|
|Deadly Designs||Kugelstadt · The Bombed Factory · The Trainyards · Secret Weapons Facility|
|Deathshead's Playground||Ice Station Norway · X-Labs · Super Soldier|
|Return Engagement||Bramburg Dam · Paderborn Village · Chateau Schufstaffel · Unhallowed Ground|
|Operation Resurrection||The Dig · Return to Castle Wolfenstein · Heinrich|