AVClub: One of the many, many subjects that this incredible episode of Person of Interest tackles is legacy; death is inevitable, especially for those who put their lives on the line on behalf of others, but it’s possible for the dead to live on in the database of the Machine. A standout episode like this suggests that the Person Of Interest staff is trying to ensure that the show they’ve dedicated so much of themselves to lives on after its upcoming finale. “The Day The World Went Away” is the kind of episode that will inspire viewers to recommend the series to their friends. The show will live on in a Machine of its own—a machine known as Netflix Instant (at least until CBS allows its contract to expire). The writing of this episode is top-notch; both the plotting and the dialogue are operating on an expert level. Delivering these particular lines and moments requires incredible skill and the actors rose to the challenge, unsurprisingly. Some of the best episodes of the series are those that show off Person Of Interest’s range, balancing rich, philosophical dialogue with complex, thrilling action sequences. This is one of those episodes, and it’s a great way to gear viewers up for the final showdown.