The billionaires were found dead in their mansion. Now police say they were murdered.

  1. The billionaires were found dead in their mansion. Now police say they were murdered.  Washington Post
  2. Deaths of Billionaire Toronto Couple Were Homicides, Police Say  New York Times
  3. Police believe Canadian billionaire, wife were murdered, decline to discuss suspects  Chicago Tribune
  4. Barry and Honey Sherman were murdered, police say  Toronto Star
  5. Full coverage

https://www.washingtonpost.com/news/business/wp/2018/01/26/the-billionaires-were-found-dead-in-their-mansion-now-police-say-they-were-murdered/