Detective James Knight 's last-minute assignment to the Independence Day shift turns into a race to stop an unbalanced ambulance EMT from imperiling the city's festivities. The misguided vigilante, playing cop with a stolen gun and uniform, has a bank vault full of reasons to put on his own fireworks show... one that will strike dangerously close to Knight's home.
When an unidentified hiker is found deceased in the Florida wilderness, authorities release a sketch. Multiple hikers call in claiming to have met the man. There's only one problem – he never told them his name. It would take two years, thousands of devoted internet sleuths, and a miracle of science to identify him, and that's when the trouble really starts.