Killing of Calgary-born scientist tied to mysterious U.S. deaths, disappearances despite quick arrest

https://i.cbc.ca/ais/27c43fd4-cd71-4c7e-b46f-4242ddbcccc5,1776950536593/full/max/0/default.jpg?im=Crop%2Crect%3D%280%2C0%2C900%2C506%29%3BResize%3D%28620%29" title="Astrophysicst Carl Grillmair" width="620" />

The shooting death of a Calgary-born astrophysicist in mid-February in front of his Southern California residence sent shockwaves through his academic and professional circles.