>> yes. >> maliek kearney was free to go.aryland detectives or back to square one, at the beginning of what would become an incredibly complex homicide case. an investigation that would span a half dozen states, involve hundreds of witnesses, multiple government agencies, and a mountain of forensic evidence. coming up, could karlyn top secret work have cost her her life? >> i wonder if she was targeted, or knew something she wasn't supposed to know. >> i remember them specifically telling me, did she come into a lot of money that she couldn't explain? >> when dateline continues. ontinues my tip is, if you're having people over for thanksgiving, start cooking in october. (announcer) you can quit. for free help, call 1-800-quit now. you can't leave without cuddles. but, you also can't leave covered in hair. with bounce pet, you can cuddle and brush that hair off. bounce. it's the sheet. a little more than a week after she was killed, private first class karlyn ramirez was buried with full military honors. flags were presented t