Alford, Stephen. The Watchers: A Secret History of the Reign of Elizabeth I
Divergence: 1586 CE
What if: The Babington plot to assassinate Queen Elizabeth came off.
Summary: A digression in the introduction to a history of Elizabeth's intelligencers speculates that in the chaos after the assassination, a State Council would have had Mary of Scotland executed and that not long later, England would have been invaded and conquered by Spain.
Published: Bloomsbury 2012 (1608190099BUY).