Blake's 7 FHD 1980 S03E07 (Enhanced)

Episode: Children of Auron. Servalan has unleashed a plague on Cally's home planet Auron as a lure for the Liberator and its crew. It works, as Cally receives a telepathic message calling for help and she is compelled to go there. Servalan is also using Auron's advanced technology to create clones in her image; her children, as it were.