CBI consultant Patrick Jane, Senior Agent Teresa Lisbon and her team investigate the double murder in Palm Springs of a pro golfer's wife and her doctor, which has the hallmarks of a serial killer with a personal connection to Jane.
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.
The gang war erupts in unexpected ways that Vic cannot control; Dutch and Billings' homicide investigation grows into something more disturbing; Cassidy reaches out to Danny.
A man, whose daughter went missing years ago, also goes missing, and the team tries to connect his desire to help another couple missing their son. Meanwhile, Jack is trying to adjust to his new boss, Clark Medina.
The team investigates a bus full of dead commuters that appear to be fossilized and uncover a man who has visions of pattern-related disturbances before they happen; Dr. Bishop requests a piano in the lab to help him process data.
Cassie and Charles take the next step in their relationship, but their romantic night turns out to have anything but private
Sam and Mel intend to reveal her pregnancy to her parents after a quiet dinner. However, when Sam misses the train after having a drunk girl throw up on him, the dinner starts becoming increasingly unlikely.
The evidence on who shot Horatio leads the team to some of most Miami's dangerous including one of their own.
After a young boy, Christopher Ryan, is caught driving a runaway van, Detective Elliot Stabler and Detective Benson take the seven year-old into questioning. When Christopher claims his foster parents, Gwen and Noah Sibert, bribe him in exchange for abusive medical testing, the detectives investigate his allegations.
Catherine Heathcote (Juliet Stevenson), a high-flying journalist, is putting the finishing touches to a documentary about the case of schoolgirl Alison Carter, who vanished from her home in 1963 and was never seen again. Her film focuses on DI George Bennett, then a young and ambitious detective, who became closely involved with the case. However, Bennett suddenly withdraws his cooperation and Catherine must travel to the place where it all happened to find out why.
Richard looks at the history embedded in the Keck Observatory. How could a sand-blaster, a Cold War spy gadget and the invention of refrigerators have led to the creation of this super telescope? And using just a satellite dish and some foil is it possible to set fire to a boat? Richard experiments.
British explorer Bruce Parry journeys the Amazon across South America, interacting with tribes, locals, foreign companies, drug traffickers, rebels, and military forces as an anthropological observer.
Brad and Laura have twin teenage boys and a toddler. With the arrival of their third child, the boys were forced to share a room. Although it was fun for a while, there simply isn't enough space for the growing boys. Designer Hilary and Realtor David are ready to help. Hilary and her team will look to open up space in the suburban home so each of the boys can have their own room. Realtor David will search for houses that can fit the family even as the kids get older. In the end, Brad and Laura will have to choose what to do with their house. Will they love it? Or List It?
When Lauren is away for a couple of days, Stephanie and Doug start dating secretly. How long will that stay a secret though?
After a look into the future, Nathan's shooter is revealed. Matt chases him and winds up in a desert. Hiro receives an important message from his father. Sylar visits Claire. Maya gives Mohinder an idea for his research. Nathan recovers and gets a visit from Linderman.
Sylar goes to the Company and inadvertently releases 12 super-powered criminals in a fight with Elle. Future Peter tries to fix his mistake. Angela takes over the company. Claire learns more about her powers. Hiro and Ando travel to Paris to track down the speedster who robbed them. Maya discovers that Mohinder's injection has changed him. Matt meats Usutu, an African with a familiar power.
Alan answers a call for help from Bethany Horowitz in a suit against a tobacco giant, but he suffers a crisis of confidence when the opposing counsel turns out to be an old girlfriend. Meanwhile, Denny is plagued by a case of performance anxiety.
Derek and Sarah must outwit Cromartie after he kidnaps Charley's wife, and they must weigh the consequences in rescuing her. Meanwhile, John finds himself unable to choose between Cameron and Riley.
Blair and her minions decide to befriend the new girl, Amanda, in order to sabotage her possible new relationship with Dan. Vanessa discovers a scandalous secret about Catherine and enlists Blair's scheming expertise to use the information to help Nate. Meanwhile, Lily finds herself drawn back to her ex, Rufus, once again.