Adventures I don’t design for publication?

They don’t need so much text!

The premise? Goblins are raiding from an old keep (the upper floor is destroyed). However, the goblins are plagued by an old summoning circle in the basement, which keeps letting loose Abyssal Maws! They’ve got a deal with some ogres to keep the maws in, but they’d prefer to get rid of them all-together.

So, the goblins see the adventurers as saviours, but then betray them when they try to leave.