April Fool's Day is described by star Scout Taylor-Compton as "Mean Girls crossed with horror",[1] and was released straight to DVD on March 25, 2008.

As another in her long string of April Fool's pranks, Desiree suggests Blaine get Milan tipsy on champagne and seduce her in his bedroom upstairs.

The group goes to court, and Blaine loses control of the family's fortune, which shifts to Desiree, but they are found innocent and Milan's death is considered a fatal prank.

One year later, Desiree, Blaine, Peter, Barbie, Torrance, and Ryan receive anonymous invitations to meet on Milan's grave at noon, April 1, 2008, with the cryptic P.S.

Barbie is electrocuted in a beauty pageant dressing room, Peter's campaign truck runs him down in a parking garage, Ryan's throat is slit in his apartment, and returning home, Desiree and Blaine discover even their long-time butler Wilford has been butchered in the kitchen.

Special effects people from Torrance's Boogie Nights 2 set have equipped Blaine and the others with "squibs," and other cast members faked Desiree out by dressing as cops and "confirming" Ryan's murder as she and her brother were fleeing the scene.

The next scene involves the same inquest-probate judge from a year earlier absolving Torrance of any guilt for Desiree's death, and confirming Blaine as sole heir of the family estate.