The VCTF discovers the identity of the poisoner (as does Jack, of course); and Bailey considers a drastic step after Frances's latest brush with the law.

A poisoner who's dispatching rich people with toxic creatures is so clever that Jack is beginning to take notice.

Sam probes a series of murders in which the victims' faces are covered with lace and their mouths manipulated into ghoulish bloody smiles.

When a "dirty" undercover FBI agent is murdered the Bureau suspects a mole.

In the Midwest, a man in a big rig causes head-on collisions involving classic cars, and then "collects" their occupants; in Atlanta, Bailey's daughter starts a new school.

Terrorists working with a nuclear physicist who's a closet pacifist storm a banquet hall and take the diners hostage.

An avenging angel kills criminals who have beaten the rap. He also tapes his deeds and sends the tapes to TV stations.

The agents probe the murders of two men with ties to a tycoon. Meanwhile, they have Jack in their sight. Or do they?

Just when the agents find Jack's lair, they're sent to probe the murders of two men with ties to a tycoon.

Jack displays his diabolical handiwork on Grace's husband. But John hits on a way to get to Jack---by hitting on Sam.

Murder victims turn up in strange "poses," after having been garroted and stabbed. Meanwhile, the VCTF's computer system is acting strangely.

A psychiatrist at a hospital for the criminally insane is murdered---in the MO of an inmate, a serial killer who had both motive and opportunity. But Sam, who has a history with the man, doesn't think he did it.

A noted Alabama surgeon is abducted upon his return from a consultation in Russia---two years after his best friend, another renowned physician, disappeared.

The unit probes arson and murders on Native American reservations; Jack breaks into Bailey's apartment and steals his ID.

Murder victims are found in cages with dry-cleaning bags over their heads. They'd been tortured, but each in a different way.

Three women are missing---and two of them were taken from bloody bedrooms where investigators find evidence of a ritual involving candles and the head of a jaguar.

Jack is back in business: he kills the old man who had fixed Sam's toys when she was a girl.

While an ecoterrorist fixated on cleanliness is planting bombs around Pittsburgh, Sam fixes an eye on an attractive ATF bomb expert.

A senator is targeted by a gunman whose trademarks include dolls with their eyes cut out.

The murder of an in-line skater fits the MO of a series of 10-year-old killings, but the man convicted of them is still in prison.

An arsonist is at work in St. Louis, Atlanta and Nashville; serial killer Jack finds out where Sam lives.

Single Atlanta women are being murdered, but as Sam zeros in on the killer, another serial killer is zeroing in on Sam.