The Shannara Chronicles is based on the second book of the original Shannara series, The Elfstones of Shannara written by Terry Brooks.
The Shannara Chronicles Episode 4: Changeling
While Amberle embarks on a deadly task to prove her worth to the Ellcrys, the Dagda Mor sends the Changeling, an ancient, shape-shifting Demon, to kill her and anyone in its way.
The Shannara Chronicles stars Austin Butler (Wil), Ivana Baquero (Eretria), Manu Bennett (Allanon), Aaron Jakubenko (Ander) and Marcus Vanco (Bandon) along with new cast members Vanessa Morgan (Lyria), Malese Jow (Mareth), Gentry White (Garet), Caroline Chikezie (Queen Tamlin), and Desmond Chiam (General Riga).