Jean and Martin set out to frame Victor, hoping that Nelson will kill him as a result. Meanwhile, Julie prepares to leave London; and Martin tells Jean a crucial piece of information about their father's death.
Maureen suffers a personal tragedy, and Jean offers to use his skills to help her. Meanwhile, Victor discovers Martin's secret; Maddy begins a risky online friendship; and Nelson takes Jean out to the woods to kill him.
Jean takes a stand and refuses to do a requested clean, when Nelson pushes the boundaries too far. Fearing retaliation, Martin takes steps to protect them from Nelson, but ends up getting them into even deeper trouble.
Nelson calls on Jean when a politician's drug-fueled night with an escort ends in tragedy; Maddy plays truant on the same day Julie opens her new business; Jean discovers a terrible secret about Victor.
Jean is stunned when Nelson reveals what his first clean-up job will involve and is forced to miss a crucial appointment with Julie. Meanwhile, Martin decides to leave town when he discovers the French gangsters have followed him to London.
The Bastiere brothers are forced into a complex and dangerous partnership with Nelson Clay. Meanwhile, Martin continues to cause tension in the house; and Julie decides it's time to take charge of her future.
Two brothers with a crime scene cleaning business are forced to clean up the mob's dirty work. In the opener, Jean's well-ordered life is disrupted when his irresponsible older brother Martin, who is on the run from gangsters, shows up.