once the hoynes' house would have been festive. not anymore. they closed the door, turned out the light. just the word halloween unleashed a wave of grief. the investigation into robin's murder was stalled even though police had a suspect in plain sight. william marshall. and the family groped for solace. >> we had to take comfort in that because we really were probably never going to see any resolution in this. they didn't have enough evidence. >> years passed. there were other cases to solve, new priorities, of course, and for detective lancaster, retirement. >> it there are cases that stay with you after your retirement, probably for the rest of your life, at least for me. this was one of them. >> the hoynes family struggled to move on without robin. there were high school graduations, marriages, children, but --