"Signal: The Movie" is a continuation of a Japanese television show that was originally created in South Korea. The programs are available on streaming channels, and watching them is sure to provide some much needed context as to what it going on. "Signal: The Movie" tends to throw viewers into the middle of the ongoing narrative, but it does clarify the premise of the series, where Sergeant Ooyama (Kazuki Kitamura) from the past magically connects with Lieutenant Saegusa (Kentaro Sakaguchi) of the present via a battery-less two-way radio. It's a police procedural meets "Frequency," with the big screen take basically resembling an episode of television entertainment. Read the rest at Blu-ray.com

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