This mod adds Secret Master lockpicks, probes, and alchemy apparatus to the game.
Thieves' Tools: Unlike some other mods that implement these items, this mod does not add them to Hecerinde's inventory to sell. I thought being able to buy unlimited copies of them was too easy. Instead, they've been added to the appropriate leveled lists. They'll start showing up in loot occasionally starting at level 30 - you'll have to wait a bit for the good stuff.
Alchemy Apparatus: The Secret Master apparatus have not been added to the apparatus leveled list. Instead, each has been hand-placed in a single location in Vvardenfell. There's no need for unlimited copies via leveled list, since one will last a lifetime. The "spoilers" document in the archive lists the location for each one; you won't generally find them in safe places.
Feel free to contact me on the Nexus with any comments or suggestions. You can also find me on Discord as Necrolesian#9692.