This is such a sad story. I wondered what happened to the brother and googled his name. He was apparently released in 1977 -- only 12 years later.

http://news.google.com/newspapers?nid=1951&dat=19770918&...

If the link doesn't work, then just put "thomas kosberg released" in the google search bar.

The family is buried in Forest Lawn Cemetery, in Burnaby, BC. I went down on the weekend and left them flowers.