Aces and Apes
The Rangers stop on Mesa to repair space tug 4, which pulling a ship outfitted
with an experimental andorian engine that would render current drives obsolete.
A space time distortion opens up, and through it comes a mysterious object,
which hits the experimental vessel, and both crash on Mesa. The UFO turns out to
be Scarecrow.
He takes over a riverboat casino gambler, and teams up with Lazarus
Slade. Slade is only interested in getting the new drive, while Scarecrow is
after Immortality.