Secret Six #06

What is the secret? In fact, there are more than one and answers shown here. The true identity of Mockingbird was just one of the secrets, and it's not even the most shocking. Plus: Marriage, that should not happen is offered. The man you thought was long gone profits. And at least one of the six is not the person you think they are. (Well, it's a fake.) From this point of view, all bets are off.