Departed and Forsaken (free at DriveThruRPG) is an 11 page adventure for any fantasy system. I decided to use Wizards! (same place), and I used my fifth level wizard Melloncart. To solo this, I used Ultimate Toolbox. I need to mention that this two hour adventure, as written, is entirely investigative with lots of social encounters (talking). Also, it is timed, so time is precious.

So, this quest came from a king. He had survived an assassination attempt, but his personal guard (Rogel) died. The king wanted the assassin to be caught. The king’s wizard had determined that Rogel had seen the assassin’s face and that he was now in limbo (Rogel). The quest would be dangerous, which meant Melloncart was the perfect choice. When Melloncart arrived at the Station to Nowhere, he immediately got to work talking to those who were stranded there, along with Rogel. He was able to help them with their memories and get them on the train. He also noticed an odd door inside the station. He cast Detect Magic and it was magical. He unlocked it with Open Door. When he went through he ended up in a deserted roadhouse. First he had to deal with a cursed staff which caused confusion to those in its vicinity (Dispell Magic). He explored the empty place and eventually found the skeletal remains of a human in a cabinet. He decided it was time to leave. Now, how to get back to the king?

The adventure does include a map which is the best one I have seen this year (in my opinion).

Good luck!