The worst part for the family is that the media can label their father a rapist and murderer without him actually having been convicted. The police have strong evidence, from the sound of it, but with a living person the news media wouldn't be allowed to go around saying unequivocally "he's the guy" without a guilty verdict.
The upshot is that even if there's been a mistake, this man's name will never be cleared, and his family will just have to live with this.