Pathfinder 1E How could you do this using using mechanics?

[Ezequielramone]

one of my groups liked the idea of reclaiming an abandoned fortress. so they did. well, last session a group of enemy's minions managed to stay a night in the barracks of the fortress disguising Themselves with magic and occult their alignment with other magic.
Now that they are dead I want to use that infiltration to make an ambush or something.
Is there an object that give you the power to teleport you to the item location? could they leave a mark to teleport to? could they share they senses with something else and so the boss know the location to teleport?
Which is the best idea and how can I do it using mechanics?

 

[RUMBLETiGER]

Refuge teleports you to an established home base of sorts.
Teleport Trap directs teleportation to a specified place.

Both are higher level spells.

 

[Ezequielramone]

Teleport trap is excellent. thanks.