had no solid leads. laura's brother warren told police of an incident he had with a part-time gardener who worked at his mother's home. he saw haden clark driving through the neighborhood. when he attempted to speak with clark to ask him if he had seen laura, clark sped away. 40-year-old hadden clark was known to police because of a past arrest for burglary. a few years earlier, clark had also been a suspect in the investigation of a missing young girl, a case that has never been solved. clark was born with brain damage and had difficulty throughout his life. he trained as a chef, but had difficulty keeping jobs. he was currently working as a gardener and other odd jobs. >> he was at one time in the united states navy, and he was discharged and diagnosed as a