The episode has a nice twist- Abby wants to donate a kidney as good will gesture and found to match the patient. As soon as that takes place a second identical donor is found. The scientist nature of Abby leads her to conclude that they must be closely related and even perhaps the needy patient. In this background the NCIS team manages to get the criminals with her help, as usual. I liked this episode since it shows the true dilemma that a donor faces as well as the consequence of one's decision.