To put it mildly, Rubicon gives us a lot to think about. Whether true or not, I find fascinating the speculation about whether the Islamic American terrorist Kateb/Joe is (or was) the mysterious son who Spangler had told Will about. I have no idea whether Kateb/Joe survived the explosion of his boat if, indeed, that was what happened to cause the Galveston tanker disaster. I am also wondering where Katherine Rhumor is and whether she is safe. I hope that we get the answers to both riddles.
I thought that Will's finally having figured out what Kateb/Joe was going to do but too late, and Will's reaction to it, were gut wrenching.