Under Twin Suns (Spaceways Series, No. 8)

When the crew of the starship Satana flees captivity on the ice planet Knor, they just happen to leave with millions in exotic jewels. Now there is only one place to turn those baubles into cash: Jorinne, the Gem Capital of the Galaxy.

The Satana should arrive just in time for the Interplanetary Jewel Fair.

Janja and Hellfire figure they'll land at the space station, jet down for some wheeling-dealing, indulge in some hanky-panky, and return filthy rich. Unfortunately, the fair attracts an enormous quota of cheats, thieves, kidnappers and killers who also want to become filthy rich.

First printing, 1982, from the now-defunct Playboy Press.