NGTV Guide: Friday, June 25

Friday Night Lights – NBC 8/7c
“The Toilet Bowl” – Eric realizes that East Dillon’s problems aren’t only on the field; Julie and Tami take a college trip to Boston; Luke’s injury takes its toll; Riggins makes a decision that could backfire.

Merlin – Syfy 10/9c
“The Fires of Idirsholas” – When the fires of Idirsholas burn for the first time in 300 years, Gaius fears a sorcerer has reformed the deadly Knights of Medhir. Arthur and Merlin ride out to face the Knights … and barely escape with their lives. Upon returning home, they find everyone in Camelot is under a strange enchantment – all except for Morgana. Could she be behind the magic which threatens the Kingdom? As the Knights attack a defenceless Camelot, Merlin’s loyalties are tested to the limit.