It doesn't seem like the producers changed anything from the time the show went on hiatus in early December to when it came back last week. Two changes in showrunners and statements of better things to come, and everything that was still annoying about the show remains.
Zoey played the role of the intrusive person who gets into arguments with everyone. First, she shows up at Mark's house to yell at him, because she has a predetermined notion that he will kill Demetri. Second, she shows up at the FBI office with a FOIA request for the Mosaic. This angers Wedeck and Demetri, but Wedeck has to comply or she will go to a judge, making the information open to the public, the last thing any of them want. Demetri loses face and as a result, is mad at Zoey, so they argue. Zoey makes the stupidest assumptions that contradict. She thinks if she does nothing, Demetri will be killed by Mark. Then, she blames Mark in advance for killing Demetri, but she still thinks she can change the future. Do the writers even care if their characters make sense?
There was plot movement with the investigation. Mark takes Lloyd to his house to go step by step through his flashforward, and finally Lloyd tells Mark who D. Gibbons is. He is named Dyson Frost, a physicist who stole Lloyd's work and supposedly died.
Aaron is very protective of Tracy as we see in the beginning of the episode as we see him in the past attack a jailer who had unclean thoughts about Tracy. Mike, Tracy's colleague in the military, finds out that Tracy is alive from Aaron. Predictably, this leads to Tracy being placed in a box and taken away. Aaron strikes at the heart of Jericho, going to the home of James Erskine, the head of Jericho, and declaring war. His first salvo is Aaron hanging upside down. Out of the three stories in "Blowback," I think this one has the most potential. That's not saying much in a sea of mediocrity though.
Additional plot points: Vogel hooks up the FBI with a free trip to Somalia for Demetri, Janis, and Simon. The deadline for conception is approaching and Janis still doesn't have a donor.
Score: 8.3/10
