A Library of Dark Thoughts

“Harvey Selden goes down to Mars from an observation ship, and accepts an invitation to visit Firsa Mak's house by his friend Bentham. He meets a martian woman, Lella, of a type he has not seen before. From there he is shanghaied into observing the Purple Priestess Mad Moon ritual and isn't able to cope, but survives. The others want him to tell the Bureau, but he runs for Earth instead, into therapy. However, at the end a communique arrives from Lella, saying she is waiting for him at the next ritual."