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'7th Heaven's Mackenzie Rosman in SyFy movie 'Ghost Shark' (Photos)

David Randolph-Mayhem Davis appears as Blaise and former '7th Heaven' star Mackenzie Rosman appears as Ava in a scene from the SyFy Original Movie 'Ghost Shark,' which premieres on the cable channel on Aug. 22, 2013 at 9 p.m. ET. <span class=meta>(SyFy)</span>
July 30, 2013 2:58:31 PM PDT