I noticed as I was reading your second to last post that Jenna and Jim are ahead by a day. It's alright, just let me know whenever you want them in again. 

Also, I have an idea as to the direction we could take. The detectives slowly start working their leads, eventually to the point where they can bring in the siblings for questioning down the line in the story (we'd have to work on the specifics for that). They get questioned and released as there's nothing solid against them. More time passes and enough evidence is gathered to issue a warrant and the detectives get into it with the siblings when they find them, and that's where we could have a big fight scene, which up until then Jenna would have been getting trained. The siblings get away for xyz reasons and at that point it's a cat and mouse chase. But in the end they do get caught and taken into custody.