By Janet Soskice. The true story of the two sisters who discovered one of the earliest known copies of the Bible on Mount Sinai in 1892. Read by Stella Gonet. After a long and time-consuming battle, Agnes' discovery is finally published, but this does not put an end to the twins' travels. At the age of 63 they set off for their sixth and final trip to Mount Sinai. A Pier Productions production for BBC Radio 4.