Authorities search for a suspect in the rapes of two Texas A&M students; a woman credits her medical recovery to a visit from a ""healing UFO""; and a former reporter tries to locate the woman she recently discovered to be her sister. Also: a probe on why serial killers murder; an update on a missing youngster, located in Iceland. (Repeat) Wanted: Don Richard Davis, Jr. Unexplained Death: Kristi Lee
