The Mutant Weapon

The only links between the farflung space colonies were the Medical Servicesspaceships. When these lonely travelers paid a call they were always given aroyal we... » 

The only links between the farflung space colonies were the Medical Servicesspaceships. When these lonely travelers paid a call they were always given aroyal welcome. So why did the landing grid on Marix III try to destroy MedServiceman Calhouns ship? «