Will Packham is an idealistic pupil barrister, but his boss doesn't respect him, his clients are all guilty, and he's fighting for his job. Will is beginning to wonder if he's got what it takes.

As Will grapples with whether to tell his girlfriend about his recent indiscretion, his new-found notoriety throws up a juicy opportunity; Caroline wonders how much to let the jury know about a particularly unappealing client.

Caroline and Will take on a last-minute case, only to find themselves in a battle with the clock, a skittish victim, and an under funded system to bring a horrible criminal to justice; the pupils' battle for tenancy heats up.

A series of odd incidents on the Tube lands Caroline and Will with a hard-to-read client. Meanwhile, Ashley is making political moves, and Will tries to get to know Caroline better, only to wish he hadn't.

Chambers is putting the pupils through their paces in a professionally acted mock trial. Will learns the brutal art of cross-examination from Caroline, only to find it's a skill he needs in his personal life too.

It's the day the pupils get to address a court for the first time, but Will is reeling from the break-up of his relationship, and wondering whether the law is really for him.