The Stalker | New 2nd-Level Adventure for Fifth Edition (Patreon)

Invisible stalkers are relentless killing machines summoned by dark conjurers and employed to hunt, then kill or capture their quarry. So long as the quarry remains on the same plane of existence, the stalker can track its target without fail. And as elementals, stalkers are notoriously difficult to kill, resistant to most forms of non-magical damage. 

This adventure is designed for three to seven 1st to 4th level characters and is optimized for four characters with an average party level (APL) of 2. The adventure can be placed into any campaign setting that has a small, remote village or town.

Note: sorry for the ping, but I've fixed all of the typos in the doc and corrected the level (it shouldn't go any higher than 4th)