I'm kinda susprised that no one made a thread about this issue yet. I have to say that it was a good issue and it seemed to solve many of the mysteries from the first issues.
It's basically a letter from Mr. Terrific to Alanna, explaining all the inconsistencies he had found during his investigation:
spoilers:end of spoilers
The first is the invasion of the Pykkts to Rann. They are described by being ruthless and have conquered many planets but they easily lost against Rann, making many different mistakes during the war. And if they were known as ruthless why they didn't kill Adam the instant he got captured by them?
The second inconsistency is the current invasion of Earth. Because of the many crisis and attacks that have suffered, Earth seems more prepared than Rann to deal with invasions, but they losing and badly. Mr. Terrific points out that the attack of Phoenix was probably caused by a double agent cooperating with the Pykkts.
The final inconsistency is the dedication that Adam wrote for his daughter in his bio-book. Mr. Terrific comes to the conclussion that the message is an apologize for Aleea to read for Adam's actions, implying that she is alive and Adam had lied about her death.
With all these evidences, Mr. Terrific reveals that Adam is a double agent working with the Pykkts. When he got captured by them he made a deal with them. In exchange of losing the war against Rann, he would help them conquer Earth. All the genocides Adam caused to the Pykkts during the war were allowed by them, so that Adam would have an aliby so he could avoid that the heroes suspect of him as he would have a deep "hatred" towards the Pykkts. Mr. Terrific guesses that Aleea is alive and is used as a hostage by the Pykkts to ensure Adam's cooperation.
Alanna seemed to believe Mr. Terrific's words as she angrily smashed the mirror of the bathroom, before hearing Adam's voice, who had found the letter. The issue ended with Alanna ready to confront her husband.