Cops in Kansas City, Mo. are looking for 4-year-old Allyson Corrales, who disappeared after police discovered her mother, Katia, murdered in cold blood. Police in Texas discovered the family's 1999 Kia Sportage in Houston, TX. A witness told police Allyson might be in Mexico. Police say Luis Corrales-Sanchez is a person of interest in Allyson's disappearance.