A ruthless defense attorney and no-nonsense law professor at a Philadelphia university selects a group of her best students to work at her firm.

A stunning discovery in Sam's murder case leads to changes for Annalise and the students. Meanwhile, Annalise tries to keep things business as usual by taking on a new client who is in the mob, but Hannah continues to pressure her for answers.

With Wallace Mahoney’s murder unsolved and Frank’s whereabouts unknown, the "Keating 5" struggle to move on with their lives as they enter into their second year of law school. Meanwhile, Annalise’s reputation at Middleton University is on the line, so she creates a criminal law clinic where the students will compete to try their own pro bono cases. Annalise also wrestles with a decision involving Frank that could change everything.

Tensions in the courtroom run high, as the prosecution seeks to bring forth a new charge against Annalise. Meanwhile, Nate uncovers a crucial piece of information that could threaten his own innocence, as detectives call Oliver in for questioning.

Annalise selects students for her new legal clinic at Middleton and juggles job offers from competing firms, all while the Keating 4 attempt to move on from last semester’s turmoil. And in a startling flash-forward, a new mystery is introduced and it shakes things up for everyone.

As Michaela, Asher and Connor gear up for their last semester of law school, they take on a weighty case involving an illegal immigrant who wants asylum. Meanwhile, Michaela boycotts going to class after a blowup with Annalise about her father. Elsewhere, in an unexpected confrontation, Annalise learns a shocking truth that makes her question everything she thought she knew.