Context:

This biography is quoted at the opening of the episode and referenced multiple times throughout. The hosts discuss Wormald's critical perspective on Mary, noting that 'She hates Mary, Queen of Scots.' The book is used as a primary source for analyzing Mary's political failures and decision-making.

Context:

A biography of Mary Queen of Scots by John Guy is extensively quoted throughout the episode. While the specific title is not mentioned, the hosts repeatedly cite Guy's work with phrases like 'John Guy puts it really well,' 'to quote John Guy,' and reference 'reading John Guy's kind of comprehensive takedown of the casket letters.' This appears to be a major scholarly biography used as a source for the episode.