Part 4 Summary

Redmond contemplates Wallace's story and his fate and glances at the newspaper containing his death notice before he explains the circumstances surrounding his demise. Wallace's body had been found in a construction site near the East Kensington Station. An extension of the railway was being built there, and there was a very deep hole in the ground. A blockade had been secured around it with a doorway for the convenience of the workmen. The door had accidentally been left unlocked.

Redmond wonders if a trick of light had made it appear that the blockade was a white wall and the door his green door leading to the garden. Or perhaps there was no real garden, door, or wall after all. Perhaps the entire story was just an illusion or figment of Wallace's imagination. Maybe the belief in the door in the wall offered...