Postmarked the Stars
by Andre Norton
This is the 4th of 7 Solar Queen Novels.
They carried their deadly cargo to the very limits of the universe.
The first shock is the body - the dead man aboard the Solar Queen bears a terrifying resemblance to the cargo master, Dane Thorson.
Then Thorson and his crew discover the secret behind their strange cargo: an incredible mutation that threatens the universe with an uncontrollable new life form.
