later on, michael tells sara that he had a dream about scylla, and he explains that scylla is not actually the company's little black book, but knowledge regarding a chemical combination that can produce energy equivalent to that of the sun's. lincoln visits michael shortly after, who is shocked to find out that lincoln is willing to work with the company to retrieve scylla. he attempts to convince lincoln to stop what he is doing and that the company cannot be trusted, but lincoln gives michael the "tombstone ii" folder and reveals to him that their mother used to work for the company before she died, and that he is just "following the family business." a preview after the season 4 finale shows lincoln on the phone with michael and says he will stop at nothing to get scylla. michael replies saying he will stop at nothing to stop lincoln from succeeding.