 With William now dead in both universes, Walter discovers at the start of Season 3 that William left the whole of Massive Dynamic to him in his will.As explained by William at the end of Season 2, the alternate version of William was killed as a young man in a car accident; as a result, Massive Dynamic in the parallel world was never formed, instead there is only Bishop Dynamic.In season three, Walter remembers that William had an idea of developing "soul magnets", devices that would channel the energy from a dead body into another entity.