The mysterious figure of Bertha Mason provides much of the tension in Jane Eyre , but what does the reader really know about her? Rochester provides some details of her past, but is his account reliable? Caribbean author Jean Rhys attempted to tell the story of Rochester's insane (and perhaps misunderstood) wife in her 1966 novel Wide Sargasso Sea . It's a sort of prequel to Jane Eyre . I'm afraid Rochester doesn't come out looking good, though we always knew he had a bit of a wild side with his continental dalliances. Anyway, there's a lot of interesting backstory about Bertha's origins in Jamaica, her real name, the tragic circumstances of her upbringing, and how she was established at Thornfield Hall. Gosh, if Jane had only known all these details about Rochester, she might have taken St. John up on his offer of marriage. All in all, Wide Sargasso Sea is pretty credible, but I missed Charlotte Bronte's flowery language, and of course th...