Team Scorpion try to save a boy on Christmas Eve when he gets trapped in a beach-side cave and the rising tide threatens to drown him.
Sylvester is seriously injured when he accidentally triggers an explosive device during an investigation; and Team Scorpion search for who is responsible.
The team tries to protect Cabe's ex-wife, after she uncovers evidence that suggests foul play in the death of a prominent congressman.
A musician, who created a controversial algorithm that generates hit songs, helps Team Scorpion find a music blogger's murderer. Meanwhile, Drew asks Walter to help him connect with his son.
Three convicts break out of prison and the investigation reveals that one of the escapees is a brilliant hacker who is being forced to help the other two steal billions of dollars online. Meanwhile, Paige tries to manage expectations for Ralph when his father returns.moreless
Team Scorpion must pass a mandated psych evaluation or face being disbanded after they are accused of destroying a priceless work of art. Meanwhile, Ralph is reluctant to go to his school's Halloween party, so Paige asks the team to step in and help.moreless
Walter enlists the help of a former troubled team member when a Los Angeles nuclear reactor is on the verge of a cataclysmic meltdown.
Team Scorpion go to Las Vegas for a simple casino job, but a robbery leads to Walter's arrest, leaving his colleagues to try and clear his name.
Scorpion is called in to save the Governor's daughter when she is somehow "bio-hacked" with a deadly virus and is given 24 hours to live. A letter about his sister, gives the case new meaning for Walter.moreless
Computer genius Walter O'Brien and his equally brilliant friends investigate high-tech crimes. In the opener, Walter and his misfit colleagues are hired by the government to solve a crisis at the Los Angeles airport that leaves dozens of planes unable to land.moreless
Megan and Tommy attend her father's exhumation but it only yields more questions. Joan suggests Megan check out her father's patient files for a connection to his death.
An accused murder violently escapes from a transport van and soon the witness in his case is found dead. He heads straight to Megan pleading that he's being framed and didn't commit the murder. It's up to Megan to find the truth.moreless
A plane crash in Philadelphia takes out the city's main power grid making it difficult for Megan and the rest of the team to conduct the necessary autopsies. While investigating the plane crash, Tommy and Riley are involved in a serious car accident.moreless
Megan and Tommy must determine who killed a schizophrenic teenage girl at a mental institution. To make things interesting, a patient claims that the murderer really meant to kill her, and they are being stymied by the ward director.moreless
An investment banker on trial for defrauding investors is kidnapped leaving court and later surfaces in a video as having been killed. Tommy and Adam have to determine if he faked his own death. Megan learns more about her father.moreless
When Tommy is discovered at the scene of a young girl's murder, covered in blood, Megan is his only hope.
A woman's savage murder leads Megan and Tommy to a neighbor inflicted with rabies who bites Tommy and is diagnosed with rabies. Kate calls in the new health commissioner, Dr. Charles Stafford, to help Megan when a second case of rabies is discovered sans bite marks.moreless
Kate begins to suspect that the handsome and mysterious Sergei, with whom she's having a tryst, may be involved in the death of a young Russian girl.
Working with Tommy on a vigilante killing, Megan meets up with a grief counselor who offers to help her deal with issues about her father's suicide.
The shooting death of a New York mobster's son creates a tense situation when the mobster threatens to find and kill the person responsible. Megan and the team must hurry to solve the case after one suspect is killed.moreless
Megan and Tommy must separate out fact from fiction to determine if a child's murder was severe child abuse or something else.
While Kate comes under fire from D.A. Russell, Megan has cracked the case but can't tell her team. As long as the killer has Lacey, Megan must keep what she's learned to herself.moreless
As Megan returns to work months after Peter's death, she is thrown together on a new case with a detective from her past. A serial killer is seeking out young war veterans but the case hits close to home for Megan when the killer takes Lacey hostage.moreless