“The Masters of Sleep”
by L. Ron Hubbard
Publication date: October 1950
Original publication: Fantastic Adventures
Genre: Fantasy
Story description: An older Jan/Tiger and Alice/Wanna rediscover adventure and each other, Jan/Tiger finally merges into a single entity—master of day and night, of the parallel worlds of sleep and waking.
Currently available as the book Slaves of Sleep & The Masters of Sleep.