Patrick O'Brian - The Surgeon's MateEpisode 4BBC Radio 4 Extra Duration: 15 minutesFirst broadcast: Mon 15th Dec 2014, 11:00 on BBC Radio 4 ExtraLatest broadcast: Tue 16th Dec 2014, 04:00 on BBC Radio 4 ExtraDr Maturin accepts a delicate mission to the Baltic to turn a Catalan brigade to the British cause. Read by Benedict Cumberbatch.GenresDramaAction & AdventureDramaHistoricalFormatsAudiobooksSeriesPatrick O'Brian - The Surgeon's Mate Source: BBC Online