A computer program often ends with “Return 0”, meaning without an error. In this episode titled “Return 0”, while our beloved Machine may not have had such a normal exit, a number of the story threads, and certainly the series, had a satisfying ending. Not all rainbows and unicorns, certainly,...

In “.EXE”, Finch is ready to kill Samaritan, even if it means also killing his own Machine. He and Greer have it out over who’s vision of the place of AIs in this world is better, bringing up front some of the core questions that this series has asked, and whether one or the other is willing to...