Carmen Robinson should be 56, a greying boomer, perhaps an early retiree discovering the joy of life untethered from the daily grind. Time to sip mid morning lattes. Time to lounge with a favourite book. Time for family. Instead, Carmen (inset) is a smiling snapshot, a memory, a life with no conclusion. She also is a statistic, one of thousands of unsolved murders that have been accumulating in Canada in the past half century. Carmen was just 17 when she stepped off a bus a few blocks from her home in Victoria, British Columbia, on December 8, 1973. She vanished and was, it is presumed, murdered. Her body has not been found and her killer remains unknown.