All the local news you need tonight on WCPO 9 News at 6pm with Tanya O'Rourke and Adrian Whitsett. Then news from the world with David Muir and ABC's World News Tonight at 6:30pm. | WCPO 9

WATCH: Nathan Carmen's mother presumably died at sea, but did he kill her? Tonight ABC 20/20 explores this mystery: http://abcn.ws/2kxqwTH | WCPO 9

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