Investigators say “there is nowhere to hide, no rock to crawl under” for Chhim Vichet, 30, the primary suspect in the brutal double-homicide of a 10-year-old girl and her two-year-old brother. The grisly murder scene was discovered by the children’s father after he had returned home from work. NGO Child Protection Unit said the murder “one of the most brutal homicides we have had to investigate.”