The CW network has released the synopsis for episode #109 of Frequency, which you can check out below. The installment, titled “Gray Line,” is officially described as follows:
WINTER FINALE – Raimy (Peyton List) and Frank (Riley Smith) make a startling discovery about the Nightingale killer. Meanwhile, Frank is blindsided by a shocking betrayal. Mekhi Phifer, Devin Kelley, Anthony Ruivivar, Daniel Bonjour and Lenny Jacobson also star.
Frequency “Gray Line” was directed by John Showalter and written by Nancy Won. The episode airs Wednesday, December 7, at 9pm on The CW.