No good guys but a great series: House of Cards Season 4

Season 4 of House of Cards turns out to be a story about the evolution of the Underwood marriage. Season starts w/ Claire essentially ready to leave Frank - she's jealous and angry about her diminished role in their relationship and when she proposes she become his vp candidate he (rightly) scoffs, as she's seemingly unqualified and in way over her head; relationship diminishes to the point where she writers to him telling him she wants a divorce - and we're thinking he's better off without out - when, about half-way thru the season he's shot in the stomach. Of course we know he will make a Reaganesque recovery - and Clair poses by his side as the faithful partner. And then, the they come to realize that she is his strongest political resource and that they are both perversely cruel and ambitious and eager for ever more power - and that they have no interest in each other physically or sexually. While Claire starts a strange and dangerous relationship w/ the novelist who was writing a campaign bio and now is her speechwriter - the series backs off on Frank's homosexuality; he seems to be an asexual power fiend and he weirdly tolerates his wife's relationship (I found that hard to believe and would think he might want vengeance just because his ego's damaged - and maybe he will in Season 5). Toward the end - last 2 episodes - to important developments: the Washington "herald" investigation of Frank U makes it into print; seems like a pretty flimsy story to me but it hints at political corruption and, w/ the story in print, it's only a matter of time before Frank is tied to 3 murders. But he's saved by a crisis - an ISIS like hostage crisis, that is very well played in last 2 episodes. Claire comes into her own as a strong and astute character in her own right, as she helps w/ the hostage release, but we see, subtly, how the Underwoods are playing a cynical game: their survival as first couple, as pres and veep, depends on having them face a crisis - so they more or less manufacture a fake war on terror, and end of episode. Still a great edge-of-seat series start to finish - a world in which there are no good guys. As Truman said:  If you want a friend in Washington, get a dog.