Temple of the Nightbringers

From the front cover:

A tribe of goblins are raiding travelers on the Long Road, and our heroes decide to help. After a dangerous overland journey, they enter a mysterious abandoned temple where they encounter terrifying monsters, deadly traps, dark magic and a shocking secret. Will they survive the Temple of the Nightbringers?

From the introduction:

Temple of the Nightbringers is an introductory adventure for newly created characters. It is designed to be played in a single session.