 He also has other branches of mysterious knowledge, such as being able to predict that a series of seemingly random letters Olivia picks out will contain a message that would help her get over the death of Charlie.In the episode "The Last Sam Weiss", Sam explains that the name "Sam Weiss" has been handed down from several of his previous ancestors, the earliest having had found the bulk of the evidence on the First People, and that his line has been searching for more ever since.He is not mentioned after the episode "The Last Sam Weiss" until the ninth episode of the final season, when Olivia and Peter discover his body in a van, deducing that in this timeline, he died after the invasion protecting a signal tower, killing two observers and a loyalist in the process.