Andre Boyer

When Penny and Bernadette go to San Diego for a pharmaceutical sales convention, Howard is left in charge of the kids. But when Sheldon finds a book on experimenting with children, the guys and Amy make a day of it.

When a classmate's boyfriend threatens to post a humiliating video of his girlfriend online if she breaks up with him, Veronica helps her concoct a vengeful scheme if he doesn't allow the relationship to end peacefully. Meanwhile, Keith searches for Duncan after his parents post a huge reward for information on his whereabouts. Later, as her secret new relationship intensifies, Veronica learns a disturbing fact about the night that she was drugged and assaulted. Recurring guest star HARRY HAMLIN appears as Aaron Echolls, and recurring guest star TINA MAJORINO portrays Mac.

During a field trip, Kate tries to set Diane up with another parent; Bert tries to get on his teacher's good side.

Kenan has doubts about introducing his secret girlfriend, Janay, to his family.