My 2 copper pieces ...
You're players have handed you an opportunity to toss more threads out and let them tie themselves all up nice, comfy, and warm.
How about this:
The target they went to get is just that, a one time target. The elemental they fought had been summoned to assassinate the missing tenant. The tenant truely is missing, having escaped from the place somehow.
Every so many sessions or adventures throw something in that hints back to the fire elemental connection/ missing tenant connection. Perhaps someone wants to know what they found in the building, was anyone else in there alive or dead? They hear a name that might be the name of the missing tenant. Later, they again hear that name and are again witness to another fire (or other element related event) which may have some elemental mischief involved. Somewhat later they encounter, in a totally unrelated adventure, information or some-such pertaining to a fire (or elemental cult) or a mage known for his specialty (fire or the elements).
At each point let the players plant the seeds and they'll begin to feel they're really onto something. Let them lead and the work for you becomes easier while they continue having fun.
You're players have handed you an opportunity to toss more threads out and let them tie themselves all up nice, comfy, and warm.
How about this:
The target they went to get is just that, a one time target. The elemental they fought had been summoned to assassinate the missing tenant. The tenant truely is missing, having escaped from the place somehow.
Every so many sessions or adventures throw something in that hints back to the fire elemental connection/ missing tenant connection. Perhaps someone wants to know what they found in the building, was anyone else in there alive or dead? They hear a name that might be the name of the missing tenant. Later, they again hear that name and are again witness to another fire (or other element related event) which may have some elemental mischief involved. Somewhat later they encounter, in a totally unrelated adventure, information or some-such pertaining to a fire (or elemental cult) or a mage known for his specialty (fire or the elements).
At each point let the players plant the seeds and they'll begin to feel they're really onto something. Let them lead and the work for you becomes easier while they continue having fun.