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.
Those anonymous dead bodies that keep turning up, they're male as well as female.
Klaus contacts Chicago witch Gloria to help him find the reasons why his plan isn't working as he expected.
Well, we knew it wasn't going to end well.
While in Chicago with Klaus, Stephan runs into a vampire from his past, someone still interested in him after decades.
Klaus attempts to execute a plan that will give him even more power, but things don't go as he planned.
Ennis is a cruel one.
Elena's celebrating her 18th birthday, but she and Damon are focused on looking for clues to help discover where Stefan went.