10. Hank Is Underground
It seems confirmed that Cross has taken over Pym Technologies and ousted the former head of the company - probably taking advantage of whatever trigger broke Hank and Hope's relationship (and made him realise the grave possible powers of his inventions). From the little snatches of information in the trailer, it seems Hank is working underground to take down Cross, or at least to investigate him - he's already confirmed he has good spying skills - and there's a distinctly home-made feel about the shots of him in his workshop and his lab. It's reasonable to think that the government (and presumably SHIELD) counts Pym as a threat too: the fact that Howard Stark and Peggy Carter are involved suggests flash-back sequences to when he was working closely with them, and the fact that he can't just call in the Avengers rather than recruiting a criminal to help suggests that relationship is over. The gaps in that story - why Pym is alienated; what he did to anger Hope - are some of the most intriguing details yet to be revealed.