Abby becomes suspicious when a woman, Mrs. Pooler (DIANE LADD), & her 12-year-old granddaughter arrive at the hospital. When Sam's imprisoned ex-husband is brought into the emergency room, the doctors assume he is faking his condition, but further tests prove otherwise. Meanwhile, tensions run high as Morris & the chief surgical resident clash over a patient. Also, Pratt heads to Africa to help Carter (former series star NOAH WYLE) & quickly realizes how difficult life will be.