Houses in Whitley’s alternate Universe were rectangle, sandstone looking material, 2ft wooden doors. It was a portal to another reality. The boy he was with shouted at his Dad when they returned Whitley took ” me ” to the twilight zone. Next Whitley has a moving out-of Body experience. His Boys witnessed Whitley going thru the floor to the lower level of his house.
Whitley becomes homesick for the visitors, His book “Grays ” is about communication with the visitors ( The Grays ).