Bugs

After escaping Earth with their rescued pilot, Samantha and Michael are eventually allowed to make a comfortable home for themselves on a moon in a planetary system light years from Earth.
Working their bar and grill, they are happily married and getting on with their new lives, until two agents of the Emporium walk in one busy and crowded night.
The inept pair tell Samantha and Michael that Earth has two major problems.
The first revolves around a mercenary who was abandoned by his colleagues after surviving the Area 51 ordeal many years earlier, he is now looking to take control of the underworld criminal organisations using alien technology.
The second problem has been created by a team of archaeologists who inadvertently uncovered an alien space craft, one that has a living cargo that should never be allowed to escape the ship, a ship the US and Australian governments want captured. What the ship is carrying is totally incompatible with Earth's environment. Many alien diplomats would be happy to see the human population destroyed by the cargo but are narrowly overruled.
Instead, Samantha and Michael are strong armed into returning to Earth with their pilot being the one they had rescued on their first visit to the planet. Their mission is simple; deal with the mercenary and the weapons he is going to take possession of, and eliminate the creatures the archaeologists have released, and they are not to let Earth's military machine gain control of the space craft or any weapons.
The two situations put their lives in peril on several occasions. They are forced to use their wits and experience in dealing with the two situations, but typical of Michael, it's all done ad-hoc, he has no plans as to how to carry out their task.
Bugs is the second installment of three books aimed at teenage and above readers who want fast action, humour, adventure and romance along with everything in between.