Noninterference — The Survey Service was supposed to observe alien worlds, without any interference. Then, an expedition broke the rule and an entire planet was at risk!
Kaleidoscope — Suppose a vampire was sent to catch Jack the Ripper? Suppose all the galaxy has starships, but hasn’t developed Earth’s military technology and firepower. And much more.
Earthgrip — Young Jennifer Logan just wanted to teach Middle English, but ended up on an interstellar trading ship headed for the adventure of a lifetime.