Board Thread:News on Criminal Case/@comment-16810903-20141007164057/@comment-24900173-20141010200236

Unless there's more than 5 suspects, Amy's brother won't appear as one on this case (but I wouldn't be surprised if he drops by in one of the final cut scenes). Pure guessing (based on suspects looks) but I think the killer will wear a badge and green clothes/scarf implying Sven Blattner or Claire Cambridge.