Quest for the Stairway to Heaven is the 25th Proposed Serial in Spectral Shadows. It is preceded by Serial 24 - Love Kills and succeeded by Serial 26 - Return to Pentalous. It is currently not being worked on, meaning that the only available material is the summary on the Synopsis Page. The namesake for this serial is "Stairway to Heaven" by Led Zepplin.
The summary is as follows:
Of course, being dead is the least of Jon's worries. He finds himself journeying across the astral planes on an odyssey that takes him to many strange places where he encounters various types of ghosts who often have some particular philosophy they'd like to share with him. The object of his quest is to find The Dream Weaver's castle. Only if he is able to find it will he be able to reclaim his destiny and his mortal life on Chikyu.