Sandra Ferens

As the Fringe team investigates a mentally ill patient who appears to be connected to a series of murders, frightening clues and connections are uncovered that lead Olivia to some shocking revelations.

When Dr. Fredrick Walden (recurring guest star Rob LaBelle), the famed linguist who was injured while studying the caves, awakens suddenly from a coma, he possesses fantastic powers and goes on a dangerous mission. Meanwhile, Lana helps Clark celebrate his "birthday" in a very special way. Lex and Helen endure doubts and stress while planning their wedding. And Lionel forges a surprising alliance with Chloe.

While his father is awaiting surgery, Clark befriends a young boy, Garrett (James Kirk), whose brother Vince (Tahmoh Penikett) dies from liver failure. However, everyone is shocked when Vince shows up at the hospital, alive and seemingly well--until his liver starts failing again. In a desperate attempt to keep his brother alive, Garrett straps a meteor-rock bomb to himself and demands that Vince be given Jonathan's liver.

Freya relives one of her past lives with Killian. Dash does a spell at work without realizing the consequences. Joanna seeks the help of an old friend, Alex. Wendy and Freddie work together to try and stop the Mandragora while Ingrid’s bond with it grows stronger.

An electricity station to be built on Native American land pits a tribe member - who's just as sure his violent plan is a spiritual mission as MacGyver is that his ancestors would be horrified - against the power company.