Consignment
Potion Detect Secret Doors - 2005b (Wooden) - C37
Note: This is a Consignment Token (hence the C37), which means a True Dungeon adventurer is selling it through Trent Tokens. But as with all Trent Tokens products, once you've made your purchase, you'll receive a tracking number and your token will be promptly mailed to you!
Reveals all secret doors in the room to the imbiber
In years past, it allowed the character to search a room for subtle tell-tale signs of secret doors. The effect was somewhat short-lived. The player was given a UV light and had 30 seconds to search for secret doors or compartments, which glowed red under the special light.
Text On Token: Reveals all secret doors in 1 room
Official True Dungeon Token Database Listing