Last week on Frequency, viewers learned something shocking about the identity of The Nightingale.

In the season finale episode titled “Signal Loss,” Raimy (Peyton List) and Frank (Riley Smith) will need to find out the truth. Here is the synopsis from TV Guide: “In the first-season finale, Raimy makes a startling discovery that leads her to reach out to Frank to voice her concerns. Meanwhile, truths are revealed.”

Don’t miss the season finale of Frequency “Signal Loss” airing Wednesday, January 25 at 9/8c on The CW.