A woman disappears. Literally.

Ousted from power, Heather Chandler decides to swallow her pride and do the impossible: apologize. She spends time with the less-fortunate at Westerburg, and learns from an unexpected source that…

In response to the spate of violence and unrest in their area, Westerburg decides to stage an “active shooter” training drill in which students are placed on lockdown while the…

Veronica Sawyer tires to make sense of her path in life and her connection to her “best friends”.

Heather Chandler blackmails JD and Veronica into doing her bidding; Heather Duke and Heather McNamara struggle to adapt to life in the new regime led by Betty Finn.

Veronica, fed up with JD, goes on a double date with Heather Duke and two handsome football players; the school musical auditions commence and Heather Chandler meets unexpected competition.

Heather Chandler tries to double down on her suicide campaign only to have her brand tarnished; Betty Finn has some suspicions that link Veronica to an unsolved murder.

The world through JD’s eyes; the police interrogate Betty and JD; anonymous text messages tying JD to his crimes hound him.

Veronica schools JD on how to be a proper boyfriend; Heather Duke and Heather Chandler spar over control of the hearts and minds of the Westerburg student body.

Trashy neighbor Rita Glossner talks an apprehensive Frankie into taking a road trip to an unknown destination. Mike takes an embarrassing fall at the quarry and has to deal with…

When Will discovers Karen’s estranged stepdaughter Olivia is a student in his law class, he attempts to solve their issues with a mock trial. Grace and Jack go on a…

As Jake struggles with his first case back at the precinct, he encounters Jess Day, who is visiting New York, and enlists her to help him find his suspect. Meanwhile,…

Callie and Aaron go on their first official date. Mariana and Jude spearhead an underground school newspaper. Noah and Jude question their compatibility, while Brandon and Grace take their relationship…

Lena is excited that her family is coming together to throw her a 70s-themed 40th birthday party. But, when Lena’s mom Dana shares her suspicions about Stewart’s behavior, it threatens…

Mariana and Jesus compete in the First Robotics Southern California Regionals, but when Mariana gets too competitive under the stress, Lena grows alarmed. Callie gets a warning from the police…

Walter must swim through the deadly La Brea Tar Pits when Team Scorpion helps a woman trapped in the tar before she runs out of oxygen.