Whoa. Look what I found :

Barry and Honey Sherman were murdered 2 years ago at the home in Canada. He was a wealthy business owner of a pharm company called Apotex Pharmachem Inc.

Canadian pharmaceutical billionaire couple was murdered

[link to www.euters.com (secure)]
(Link starts with r)

It turns out his company was involved in manufacturing hydroxychloroquine.

Patent Process for the preparation of highly pure hydroxychloroquine

[link to patents.google.com (secure)]

“When you offer a 10m [Canadian dollars] reward and nothing has happened, you can see that the people who are involved either don’t need the money or fear that if they come up with the answer, they’ll be eliminated,” Murray Rubin, a longtime friend and business associate of Barry Sherman told The Sunday Times of London.