“Nightmare Shark” (9 p.m., Syfy): You can count on Syfy for a thriller that is so
“Nightmare Shark” (9 p.m., Syfy): You can count on Syfy for a thriller that is so cheesy, and derivative, that it’s fun. In “Nightmare Shark,” a group of shark-attack survivors are hunted by a supernatural shark that haunts their dreams. The shark’s name must be Freddie.
TV listings, D3