Let the Right One In Episode Rating Graph

Mark and Eleanor turn to Claire and Peter for help, but soon realize they may have a plan of their own. Naomi and her new partner, Debra, make strides in their case, and Naomi uncovers a huge secret.

Desperate for help, Mark turns to his faith for guidance, but Eleanor decides to help him instead, risking her life. Naomi is visited at work by a formidable new Interpol agent and Isaiah gets heartbreaking news.

With the assistance of his old friend Zeke, Mark chases down a lead that might help him finally discover a cure for Eleanor. Without Mark's approval, Eleanor sneaks off to Isaiah's talent show while Naomi discovers an unsettling pattern to this string of local murders. Claire, newly reunited with her brother, is forced to make an all-important decision about her future.

Mark moves quickly to clean up a mess, and Zeke gets roped in to help. Claire is hit with a major setback at the lab and Matthew proposes a solution. Meanwhile, Naomi makes a devastating discovery that confirms her worst fears.

After ten years away, Mark Kane and his daughter, Eleanor, return home to New York City, hoping to find a cure for a rare affliction. Meanwhile their neighbor Naomi Cole, an NYPD Homicide Detective, tries to balance investigating a brutal murder at work with raising her son Isaiah, whose newly sober father has suddenly come back into their lives. Claire Logan, a brilliant scientist, receives a devastating call from her estranged father, summoning her home.

Mark and Zeke celebrate the restaurant's tenth anniversary and it ends with an unexpected bang. Meanwhile, Eleanor and Isaiah sneak out for a night of magic, wonder, and danger. Naomi struggles with new developments in her case while Claire makes great strides.