Accused killer's sanity a hot topic

An unspeakable crime. A relative charged. A defendant's sanity questioned.

That's been the pattern in several family murder cases on the South Shore in recent years. And now it is being played out in the case of accused child killer Ryan Bois. Bois, 20, is charged with strangling his 6-year-old cousin in Weymouth. Prosecutors say there is evidence the girl was also sexually assaulted.