Paula Giroday

Walter worries about Peter after observing Massive Dynamic's assembly of the doomsday device; an intense investigation begins after a dead body is discovered.

When two 12-year-old kids bully another boy, they are found dead…and in just hours after dying, their bodies are shockingly in an advanced state of decomposition. As the Fringe team investigates the mysterious case, they uncover an amorphous figure claiming more victims. Meanwhile, Walter becomes increasingly distracted by his hallucinations.

A heartbroken Cupid (recurring guest star AMY GUMENICK) returns to wreak havoc on Star City with one goal – to destroy anyone in love. When the team learns that she's targeting couples on their wedding day, the recently broken up Oliver and Felicity decide to pose as bait with a fake wedding.

The Toyman returns and takes Oliver hostage! Tess Mercer (series star CASSIDY FREEMAN) forces Oliver to come to a Queen Industries gala to put the Board at ease, but things go awry when the Toyman (guest star CHRIS GAUTHEIR) shows up with a bomb and a plan to take revenge on Oliver. The Toyman tells Oliver he must confess to murdering Lex or he will blow the place up. Meanwhile, as part of his training, Jor-El gives Clark the ability to hear other people's thoughts.