EP263: Who Killed Julia Wallace?

In 1931, William and Julia Wallace had what seemed to be the
perfect life. The couple had been married for over 16 years and
resided in Liverpool. This perfect life, however, came to a
screeching halt when Julia Wallace had her skull smashed in with a
blunt object on the night of January 20, 1931, in the Wallace
family home. This heinous crime led investigators in England on
quite the journey, ending with the most usual suspect in these
types of crime: the husband. But did William really kill his wife
that night? Or is our killer more clever and sneaky than
anticipated?

SOURCES: 
1) The Julia Wallace Murder Foundation
2) William Herbert Wallace -- Wikipedia