The found footage subgenre doesn’t always explain itself in full. Rarely is there a film that establishes why we’re watching the video recordings of others, electing to use the screen chaos of hand-held devices instead of motivating their presence. “Paranormal Activity” selected a police evidence angle to ease audiences into a haunted atmosphere, but “Chronicle” didn’t even bother to follow through on its collection of security footage and home movies. “Evidence” is perhaps the most securely reasoned found footage effort to date, creating a story that logically requires cops to sift through hours of confessions and interactions on the hunt for a killer. It’s a welcome respite from careless storytelling, but this creative spark is smothered by an exhaustively subpar picture. Read the rest at Blu-ray.com