"Sister's Keeper" is the seventh episode of Freddy's Nightmares and serves as a sequel to the pilot episode, "No More Mr. Nice Guy." The story focuses on identical twins Lisa and Merit Blocker, the daughters of the cop who killed Freddy Krueger. Merit believes that Freddy is haunting her dreams, while Lisa is initially skeptical. As the story unfolds, the twins must confront Freddy in their dreams and find a way to stop him before he kills them.
Directed by Ken Wiederhorn, this episode attempts to bring Freddy back as a central plot point, much like the pilot episode. The twins are played by Hili Park and Gry Park, and their performances are noted as decent considering their roles. The episode is described as a cheap version of a "Nightmare on Elm Street" movie, capturing the essence of the franchise but without the same level of gore, kills, or imaginative dream sequences.
The episode's plot is criticized for lacking development in its ideas, such as the connection between the twins' dreams and the absence of creative dream sequences. Freddy's presence in this episode is also deemed underwhelming, as he primarily focuses on tormenting the twins without going after other characters.
Despite its shortcomings, "Sister's Keeper" is seen as one of the better episodes in the series, partly due to its attempt to tie into the larger Elm Street mythology and provide a direct sequel. However, the lack of gore, kills, and imaginative dream sequences contribute to its overall blandness. The ending is noted as having a downer tone and effectively wrapping up the story of Merit and Lisa.
Overall, while "Sister's Keeper" may not reach the heights of the Elm Street movies, it still stands as one of the more watchable episodes of Freddy's Nightmares, offering fans a continuation of the franchise's themes and characters, albeit with budgetary limitations.