GREY'S ANATOMY - "Drowning on Dry Land" - "Grey's Anatomy's" three-episode story arc continues with a part two that will challenge the interns of Seattle Grace -- and "Grey's" fans as well -- like never before, THURSDAY, FEBRUARY 15 (9:00-10:01 p.m., ET) on the ABC Television Network. Elizabeth Reaser (Independent Spirit Award nominee for "Sweet Land") guest stars as a patient over multiple episodes. (ABC/CRAIG SJODIN) JAMES PICKENS, JR., KATHERINE HEIGL