The brother of an striving actress discovers his sister cocaine addiction and tries to get William's crew to help. Akani races to find Sweton after he mysteriously goes missing.

The gambler notices his favourite jockey is using a lot of drugs to meet weight and asks William to step in.

Although the job is to clean up a boxer before his next match, William finds that the biggest risk to the man's sobriety is close to home.

William is asked by a woman to get her drug addicted son out of an Inland Empire jail, and he does, but the trip back is not as easy when the young man refuses to change his life, and a chance encounter with a 13-year old drug runner for a powerful dealer.

A mathematics professor uses cocaine to help him publish his research in time. His girlfriend and colleague requests William's help. William tries to stop the professor before he loses everything--his career, personal life, and even his immigrant parents' diner. Meanwhile, William's son discovers a used needle in their house after a dinner party. William realizes that the needle belongs to his former sponsor and must decide whether to cut his sponsor out of his life.

An old friend turns to Banks for help as William closes in on his seven-year birthday. Meanwhile, PK's planned celebration of the event may not go as she'd like.

A mother thinks her teen daughter is involved with drugs though her drug test comes back negative. The mother enlists the help of William to prove this theory one way or another.

Sisters find that they may be linked by more than twinship when they try to achieve sobriety separately. At home, a friend of William's cuts a path of mayhem and destruction as he tempts a recovering addict with her drug of choice and crosses way over a boundary with Melissa.

A teenager pianist turns to meth in order to cope with the pressure, the father of the teenage girl asks William's crew for help, but they are stonewalled by the girl's mother.

William tries to help a celebrity beat her addiction to drugs.

William and the team take a complex case involving a drug dealer's daughter, endangering both the team and William's family.

William tries to help Zach, a once-promising high school athlete who has fallen victim to meth addiction.

William's friend needs help with a student who is abusing heroin and prescription drugs. The boy's father causes problems for the crew. William thinks the boy might be attempting suicide.

A weekend with Ben turns into a busman's holiday when William must deal with two alcoholics.

William is determined into searching for the former partner of an FBI agent; the missing man is found in a tent city of meth manufacturers, William then realizes that he's has been told lies about the real reason why the FBI agent is looking for her old partner.

The original interventionist brings William in after his intervention with a woman goes wrong and she ends up on the streets. The original interventionist considers William a "Thug" making William question his own motivation for finding the woman.