Parasite Puppeteers is the sequel to Green Comet, also available through Pronoun.
Elgin and Frances wake up to find Green Comet deserted and open to the vacuum of outer space. Together they try to find out why. Has the deadly Visitor found them? Did they sacrifice so much just to find it was in vain? The one way they can find the answer is to face their deadliest peril, and the mysterious beings who sent it their way. They do it the only way they know how, with bravery and determination.
Jim has fought forest fires and controlled traffic in the air and on the sea. Now he writes books.