NGTV Guide: Friday, March 9

Grimm – 9/8c NBC
“Plumed Serpent” – While investigating an arson-related homicide with Hank, Nick finds himself in the heated world of Portland fire-dancing where he meets a woman (guest star Danielle Panabaker) who might just be too hot to handle. With Monroe’s help, Nick will have to find out if he can investigate the case without getting himself or those close to him burned.

The Mentalist – 9/8c CBS
“Ruddy Cheeks” – Jane and the CBI try to narrow down the list of suspects when a terminally ill man, is found murdered. Meanwhile, Cho is forced to face his demons.

Merlin – 10/9c Syfy
“A Herald of a New Age” – The Camelot Knights stumble across an eerie shrine deep in the forest, its chilling atmosphere betraying a dark history best left undisturbed, as the magical drama continues. But when Elyan ignores Merlin’s warning, his actions spark a chain of events more frightening than anyone could possibly have imagined… Can a grievous wrong be put right? Or will past demons change the future forever?