Windsor polce are renewing significant rewards for four cold cases in the city dating back to the early 1970's.
Among the cases are the brutal murders of 4-year-old Brandon "Xavier" Rucker, 7-year-old Jason Sweet and 6-year-old Ljubica Topic.
Inspector Brad Hill is hoping the reminder of the four cases will shake loose memories or other information that could lead to a conviction.
A $10,000 reward is available for information leading to an arrest and conviction for each of the four cases.
He says these kinds or reminders can jog people's memories.
"At times they do when we bring them back out in the media," says Hill. "Someone who thinks what they told us at the time wasn't important or they think of something that they didn't remember at the time and that gives us a point to start over and restart the investigation."
He was personally involved in the Rucker and Dee Dee Williamson case in February 2003 and says it still haunts him and many investigators.
"We probably know who the murderer is we just can't prove who the murderer is," Hill adds. "There's multiple persons of interest and we truly believe one of those persons of interest are probably responsible. We just don't have the one piece of evidence that we would require."
The Topic murder is the oldest of the cold cases, dating from the violent assault of the child on Drouillard Rd. in 1971.
The other cases they're hoping for clues on are the May 1980 death of 25-year-old Kirk Knight, possibly involving motorcycle gang violence. And the September 1982 murders of 31-year-old Marlene Sweet and her son Jason, whose badly decomposed bodies were found in a Wyandotte St. E apartment.