Sabin Genestra Sabin Genestra was the Betazoid investigator who had served as an aide on the staff of Starfleet Admiral Norah Satie prior to her retirement during the 2360s . Sabin ' s primary role was to both question and authenticate the responses of individuals during interrogation s . During their time working together , Satie felt that Sabin ' s being a Betazoid gave him uncanny instincts that she learned to trust . In 2367 , Admiral Satie emerged from retirement and acquired her former staff , including Sabin , for her investigation of an suspicious explosion in the engine room aboard the . Sabin participated in the interrogation of Klingon exchange officer Lieutenant J ' Dan , who had admitted to stealing the design schematic s for " Enterprise " s dilithium chamber on behalf of the Romulan s , but not to the chamber ' s sabotage . Sabin confirmed that J ' Dan was telling the truth with his admission , which lead to the theory of there being an accomplice . Sabin would be assigned to the investigation of the " Enterprise " s crew alongside Lieutenant Worf . Though he felt Worf was very thorough in his work , he was surprised to observe Worf ' s motivation , after learning of the prior accusations made against his father . When Worf dismissed the accusations , Sabin stated that he " naturally considered " Worf to be a " possible security risk , " but assured Worf that he had Sabin ' s and the Admiral ' s " complete confidence " and that " " you have nothing to prove to us . " " Sabin was next present for the questioning of Doctor Beverly Crusher , where he questioned whether there was anything said in her interactions with J ' Dan that might further implicate the lieutenant . After Crusher was dismissed , he made the same query to the Crewman Simon Tarses , a medical technician who also interacted with J ' Dan . As Tarses was being dismissed from questioning , Genestra , who sensed that Tarses was lying , stating that he was " desperately frightened " and was " " covering a lie ; one so big it ' s overwhelming him . " " Sabin felt that Tarses was the co - conspirator they were seeking , and Satie fully supported her aide in the matter . In spite of this revelation , Captain Jean - Luc Picard had misgivings about employing a telepath in a criminal investigation , stating that he could not " " sanction any action against Mister Tarses based solely on Betazoid intuitions , " " while lacking better evidence against Tarses . Despite Satie ' s argument of Picard using Counselor Deanna Troi in similar instances , he still felt " " a bit uneasy with this use of a Betazoid . " " When it was later revealed that the so - called " sabotage " to the " Enterprise " was in fact an accident , Sabin found the case " hard to believe " and pressed on in investigating Tarses , even if to establish his " innocence unequivocally . " Though working under this subterfuge , Sabin instead focused on his assertion that Tarses ' was a liar , and later alleged that Tarses was hiding that he was in fact one - quarter Romulan , rather that Vulcan , and had that the crewman had lied to gain entry into Starfleet . When Picard was placed under interrogation , for his defense of Tarses , Sabin questioned Picard ' s loyalty , citing the instance he assisted in delivering a Romulan spy , known to the Federation as Ambassador , back into the hands of Romulans . When Worf spoke up for Picard , Sabin then turned on his only ally aboard the " Enterprise " by questioning Picard ' s judgment by having a security chief whose father was an alleged Romulan collaborator . As the trial began to further unravel , and following the departure of Vice Admiral Thomas Henry – an observer to the proceedings – Sabin suggested they go to recess . Following Henry ' s calling off an further hearings on the matter , Satie and her staff departed the " Enterprise " . ( )