GREY'S ANATOMY - "Unaccompanied Minor" - News of Meredith's dishonesty in the clinical trial comes to light, leading to unanticipated consequences for both her and others. Cristina finds herself in a compromising situation, which forces her to decide between her career and her relationship. Meanwhile, Owen posts his decision for chief resident and Teddy makes a surprising choice regarding her love life -- and her future -- on the Season Finale of Grey's Anatomy, THURSDAY, MAY 19 (9:00-10:01 p.m., ET) on the ABC Television Network. (ABC/RANDY HOLMES) CHYLER LEIGH