Laura Babcock’s ex-boyfriend began his own investigation into her disappearance days after she went missing. But when he brought evidence about one of her murderers to police, he says they did nothing. This week on The Fifth Estate : The Murders of Dellen Millard. Tune in Friday at 9 PM on CBC Television. | The Fifth Estate

As we head into our 45th season, we want to know, which Fifth Estate investigation do you think is the most memorable? Which had the most impact? Let us know in the comments. | The Fifth Estate

Longtime Fifth Estate host Hana Gartner was known for her forthright disposition and cut-throat interview style. She was recently named to the Order of Canada for her contributions to investigative journalism and news broadcasting, as well as in recognition of her mentorship of aspiring reporters. To celebrate her achievement, we dive into the Fifth Estate archives to revisit some of her most memorable investigations and TV moments from her 24 years with the show. | The Fifth Estate