Snakehead

After a cargo ship runs aground, the shoreline becomes littered with bodies hosting a giant squid-like creature. The Fringe team descends upon the scene to examine the bodies and discovers that the mysterious organisms are actually giant parasites. As the investigation unfolds, Walter heads back to the lab while Olivia, Peter and Broyles race against time when they realize the case has ties to a threatening organization.

Fold Equity

Despite being « banned-for-life, » Cal heads to Vegas when he is summoned by a casino owner after the star contender in the World Series of Poker goes missing right before the tournament. Meanwhile, Ria analyzes the expressions of the woman Eli is dating to determine if she’s « into him. »

Fizbo

Nothing is too big when Phil and Claire decide to throw Luke the biggest and best birthday party a boy could ever want, but when Cameron shows up as Fizbo the Clown, it sets off a chain of events that ends with someone in the hospital.

It's Only the Beginning

Erica works with new allies to uncover a biological threat they suspect the Visitors have been plotting. Aboard the mothership, Anna meets with a special guest, while managing the investigation into the murder of a V. Chad does a segment on the V Healing Centers demonstrating their amazing medical abilities, but finds himself conflicted by some of his findings.

One Man's Treasure

When a murdered man is found stuffed in the garbage chute of an apartment building and two women arrive to ID his body — one his wife and the other his fiancee — Castle and Beckett have their hands full keeping the women from killing each other as they work to peel back the layers of the victim’s double life. Was it a jilted woman, corporate espionage, or a much darker secret that led to his demise?