4/5 Robert Fortune has to transport the tea seeds to India.
BBC Radio 4
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3/5 Robert Fortune reaches the gates of a green tea factory in the Wu Yi Shan Mountains.
2/5 Robert Fortune sets sail on a junk for the famed green tea district of northern China.
1/5 In 1848 the East India Company engages a Scottish plant hunter to steal the secrets of tea
5/5 Vincenzo Peruggia is arrested and the painting is returned. End of story? Not exactly.
4/5 Vincenzo Peruggia is believed to be the thief. What are his motives and is he believable?
3/5 Why has Leonardo da Vinci's painting beguiled people through the ages?
2/5 The theft of the painting goes undetected for over 24 hours, but once it is, uproar ensues
1/5 The extraordinary day when the Mona Lisa went missing, stolen from the Louvre in Paris.
1/5 While five-year old William fishes, his older brother's seizures are diagnosed as epilepsy
5/5 William, now 17, prepares to leave home and Richard finds a more even keel.
4/5 Richard's behaviour is increasingly problematic, but there is still pleasure to be found.
3/5 Richard is captivated by a heron, but is also gripped by a furious black mood.
2/5 Eight-year-old William finds a secret door in the attic. Richard suffers dark mood swings.
5/5 Agnes' discovery is finally published, but this does not put an end to the twins' travels.
4/5 The sisters return to Mount Sinai with various academics in tow.
3/5 While working in the library at Mount Sinai, Agnes stumbles upon a hidden palimpsest.
2/5 Having returned from a trip to Jerusalem, the twins are separated for the first time ever.
1/5 The true story of the two sisters who found one of the earliest known copies of the Bible.
5/5 Rae wonders if he is as qualified for the job as a colleague who was a war veteran.
4/5 Rae was called on to deal with anyone from a scholar stealing books to the Prime Minister.
3/5 Dr Rae becomes increasingly involved in the national debate on education.