Elena, Bonnie, Matt and Tyler decide to oblige Caroline when she urges them to celebrate Senior Prank Night, but uninvited guests make for a deadly evening.
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.
The teams on the two worlds work together to solve the case of a shapeshifter, and Agent Lincoln Lee joins his world's team when no one remembers the existence of Peter Bishop.
A mysterious millionaire, Finch, approaches John Reese, a CIA field officer who is believed dead, and offers him the chance to stop violent crimes before they happen.