This book reassesses the religious politics of Elizabethan England through a study of one of its most unusual figures. Sir Christopher Hatton, a royal favourite turned senior minister, was unique among Elizabeth's leading ministers in being a consistent supporter of English Catholics and perhaps even some kind of Catholic himself. His influence over the queen was a significant factor in restraining the policy preferences of Elizabeth's more strongly Protestant advisors, particularly as regards the regime's religious policy. The book traces Hatton's life and career, his relationship with Elizabeth, his networks and his involvement in politics. It argues that Hatton's career casts doubt on claims that Elizabeth's regime was exclusively Protestant in character and suggests that Catholics and Catholic sympathisers retained a voice in Elizabethan politics.