PREVIEW: John reveals to Marlena that Tony tried to kill him; Eugenia has a hard time keeping Lexie's secret; Rex attempts to unlock his DNA.

SUMMARY:
**from SoapCity.com**
Tony is having a nefarious business meeting at Echelon when John arrives and works his way past the guard. He catches Tony off guard and confronts him about leaving him to die. Tony assures John that he'd rather have him alive and feel the same pain that Tony felt when John stole Kristen away from him. John goes for Tony's throat and is pulled away by the security guard. Meanwhile, Marlena tries to analyze her feelings for Tony as she spills her emotions onto her tape recorder at work. John comes to see her and reveals that Tony tried to kill him...

Brandon checks in on Lexie in the trauma center and remembers coming to the hospital with Fay and Paul after Paul had beat both of them during a fight with Fay about her affair with Abe. Meanwhile, Sami struggles to convince Eugenia not to tell Brandon that he is really the father of Lexie's baby. Brandon heads down to the chapel and prays to God not to harm Lexie or her baby. Lexie's contractions miraculously cease and Abe and Lexie are overjoyed. Abe goes down to the chapel to pray and implores Brandon to give up this feud. Lexie spots Eugenia and calls her into the cubicle, inquiring about her earlier conversation with Sami. Eugenia evades the question and runs into Brandon; she has a hard time keeping the truth from him, but she does. Sami hopes she's muzzled Eugenia permanently, but Eugenia's not sure how long she can keep the secret...

Rex confides in Cassie that he wants to unlock his DNA and find out all he can about his intelligence and abilities. Cassie's concerned because if he investigates his DNA, he will most likely crack her code as well and she's afraid what he may unearth about the two of them. Rex is undeterred, believing that the self-knowledge will empower them both...