James was in on itAdrian and Tom bribed James with money for Sydney's college fund, and he was the spy that kept tabs on Cecilia. It's why he's vaguely patronizing throughout the film, because he doesn't really care, and why he tries to convince Cecilia to not go after Adrian after Tom is caught because he's worried if Adrian is caught the money will disappear. Cecilia figures it out and ropes him into to being an accessory to Adrian's murder so he'll never rat on her.
Cecilia will become an anti-hero called The Invisible WomanThis is a disguised sequel for the Dark Universe. There will be a movie where all of the monsters will be summoned to battle a bigger threat. There will be an Avengers like team (but with horror monsters), and Cecilia will be a member.
Adrian filmed everything he did to Cecilia.Since the suit was covered in cameras, he also had them record his stalking of Cecilia and his brothers actions. His murder will be stored away on his computer.