The Roundheads by Mark Gatiss

The Roundheads is a Doctor Who novel featuring the second Doctor Who and is set in December 1648.

The Roundheads are victorious in the civil war against the Cavaliers however they are struggling to keep power. There are plans to free King Charles from prison, the Doctor and his companions Ben, Polly and Jamie become involved in the plot.

Ben finds himself press-ganged and on board a mysterious ship to Amsterdam. Polly is an unwitting accomplice in the plot to rescue the King, and the Doctor and Jamie find themselves arrested and imprisoned in the Tower of London under suspicion of conspiracy.

Can the Doctor and Jamie escape, manage to find Ben and Polly and still ensure that history remains on its proper course?