For anyone who has yet to read one of Patrick O'Brian's novels; please do not be put off by the film Master & Commander, if you have seen it.
These books are superb and, in my view, this is the best so far.
The Surgeon's Mate (his 7th in the Aubrey/Maturin series) focuses more on the intelligence activities of Dr Maturin - something sadly not even acknowledged in the film. Dr Maturin usually contrives to get Jack Aubrey ordered to transport him to his various assignments and therefore become somehow involved in them. In this story Jack is quite desperate to flee England (to escape the threatened visitation from an earlier extra-marital liason), only to end up with both men captured by the French.
The build up in tension is brilliant, as we read of the French Intelligence's successes in piecing together the evidence that will eventually see our heroes standing before a firing squad, while our boys plot and execute their escape - a true race against time.
The story is spell-binding - the book difficult to put down - and ends with their eventual aid coming from a most unexpected source.
Patrick O'Brian's mastery of both the English language and history of Naval warfare is unbeatable. His equal touches of comedy, grief and humanity really do put him way out ahead of the competition.
Great stuff - but don't take it on holiday with you. Your family will pine for want of your attention and the in-laws will never speak to you again ... I'll get yours in the post, shall I?