DR. CARTER RETURNS FROM AFRICA FULL OF SURPRISES INCLUDING A NEW LOVE; THANDIE NEWTON GUEST-STARS -- The return of Dr. Carter (Noah Wyle) from Africa prompts various reactions, especially when he is accompanied by his new love Makemba (guest star Thandie Newton, "Mission: Impossible 2") -- and Carter has other surprises in store -- while Dr. Pratt (Mekhi Phifer) squares off against Dr. Gallant (Sharif Atkins) over a personal matter. A busy Pratt also finds time to treat a young victim of a car accident whose case is complicated by a rare form of osteoporosis and takes an interest in an elderly woman suffering from dementia who believes he is her son. In addition, a whole nursing shift cannot go home until they find one missing valium pill. Elsewhere, Dr. Kovac (Goran Visnjic) informs Dr. Weaver (Laura Innes) about his departure date and Carter deals with a malnourished woman and her equally famished family. Alex Kingston, Maura Tierney, Parminder Nagra and Linda Cardellini also star. TV-14