Kurak was present aboard the USS Enterprise-D in 2369 to witness the testing of Dr.Reyga's metaphasic shielding. The shielding worked, although it was initially sabotaged. Kurak nearly had a physical altercation with Reyga after the first failure of the technology, and made a threat against his life. Dr. Beverly Crusher suspected Kurak may have been the saboteur and that she later murdered Reyga to pursue the technology for herself, but she was cleared when Dr. Jo'Bril was revealed to be responsible. (TNG: "Suspicions")
Kurak was played by Tricia O'Neil, who applied a pre-existing knowledge of Klingons while playing the role. She said about the character, "The makeup was difficult, but once I saw it, it was such a support to believe the world, to get into character [....] I knew the difficulty this particular Klingon was involved in because she was advancing. She had the great weight on her shoulders of being intelligent, of being a scientist, and she was crossing barriers. But she was still a Klingon, so she was very… not savage, but physical, where a lot of muscle was still involved, even though she was crossing over into being a scientist. So, as passionate as she was, she also had to be restrained in a way that was not easy for her. So, when she pushed Dr. Crusher around, she was being jousted with, and that tested her."