2020 sees the 400th anniversary of the sailing of the Mayflower - the ship that took the Pilgrim Fathers to the New World. It's a foundational event in American history, but it began as an English story, which pioneered the idea of religious freedom. Stephen Tomkins tells this fascinating story - one that is rarely told as an important piece of English, as well as American, history - that is full of contemporary relevance: religious violence, the threat to national security, freedom of religion and tolerance of dangerous opinions.