Like a strand of mutating DNA, a deadly conspiracy winds its way through the entire Alpha Quadrant, just as it stretches across several years of Starfleet history -- even to the Cardassian space station that will somedaybe known as Deep Space Nine™. A virulent plague has stricken Terok Nor, striking down both the enslaved Bajorans and Cardassian oppressors, who blame each other forthe growing epidemic. Dr. Katherine Pulaski, late of the StarshipEnterprise™, must work with the tyrannical Gul Dukat, as well as a rebel spy named Kira Nerys, to discover the true source of an infection thatthreatens them all!