'Jack Ryan' achieves what every TV series with a finite story should do; it bows out with its best run of episodes yet, that brings the story full circle while leaving you wishing there was more to come.
As a functional spy thriller with some surprising turns and plenty of twists that will keep you on the edge of your seat, it is a notable final chapter while still sticking to the notes that have worked best throughout this series.
The plot is ornate enough, and paranoia-quotient sufficient, to propel the six-episode season. It may even satisfy our appetite until the next Jack Ryan, inevitably, comes along.