After seeing Sandburg's thesis, the media exposes Ellison's powers, greatly jeopardizing the safety of a union leader facing death threats.
Ellison pursues one of the FBI's most-wanted criminals, a bank robber and an alleged cop killer.
An actor (Robert Vaughn) who once played a TV detective helps reluctant Ellison catch a killer.
Sandburg and Ellison look for a connection between an abandoned corpse and the restless ghost of a woman murdered 45 years earlier.
Ellison falls for a femme fatale and may wind up in jail when she tries framing him for murder.
A fanatical militia takes over at a nationally televised basketball game, and Sandburg and Banks end up in a hostage situation.
Sandburg discovers two of his students are involved with Ellison's latest murder mystery.
Ellison and the evil sentinel (Jeri Ryan) square off after he discovers a new aspect to his powers.
Sandburg meets and coaches a beautiful woman sentinel (Jeri Ryan) in order to hone her abilities.
Ellison and Sandburg go after a jury-tampering lawyer; Sandburg's doctoral dissertation irks Ellison.
Posing as a married couple, Ellison and Megan must identify an endangered witness in order to save the woman from her ex-husband, a junk-bonds dealer.
Ellison reluctantly works with Australian police detective to thwart a robber's plan to hit a federal mint.
A money heist, phony military officers and a train bound for nowhere thwart Ellison's peaceful fishing getaway in a remote town.
Ellison encounters an old love who is now a professional killer.
Ellison learns his special abilities began in youth when a childhood pal becomes a murder suspect.
After a heavyweight champion is shot, evidence points to his jealous brother.
Ellison and Sandburg help the substitute chief bust a drug lord; recuperating Capt. Banks overhears doctors plotting a murder.
Clues at a murder scene lead Ellison and Sandburg to suspect an institutionalized serial killer.
The sole witness to a policeman's death claims she was in a trance.
Ellison becomes an inmate in hope of avenging the death of his friend, a model prisoner who was killed trying to escape.
Greed leads to murder at an archaeological dig where a treasure map is supposed to lead to precious antiquities.
An unusual murder case leads to a corrupt plastic surgeon who gives wanted criminals new identities.
Ellison tracks down a Russian assassin who is an enemy from his past.
A woman's tale of abuse masks more vicious dealings.
A murder investigation puts Ellison and Sandburg in the middle of a plot to assassinate a peace activist from a tyrannical nation.
A man suffering from road rage torments Ellison, exposing him during an undercover operation.
Working as a bodyguard for a crime family, Ellison tries to help a woman and her young son escape from the life of the mob.
Ellison busts poachers who turn out to be wardens investigating the sale of endangered species.
Sandburg's gorgeous new neighbor names him as an accessory to her drug-trafficking crimes.
On the eve of a playoff game, a young man's death may be linked to a feud between professional basketball players.
Ellison is torn when his former tribe arrives in Cascade to avenge illegal oil operations in Peru.
Ellison opens a murder investigation when a woman awakes from a coma and sheds new light on a deadly accident.
Deaths at a new racetrack lead police to suspect Ellison's estranged brother.
A cop killer takes Capt. Banks hostage during his extradition.
Ellison suspects a setup when an armored car spills its payload onto the streets of a poor neighborhood and millions vanish.
Ellison clashes with a manipulative FBI agent when he learns a dead mob informant is really alive.
A kidnapped girl's parents hire a celebrity psychic to help Ellison with his search for the kidnappers.
Ellison suspects foul play when a campus maintenance man dies from poisonous spider bites.
Ellison and Sandburg pursue Russian mobsters who are blackmailing a desperate immigrant family into smuggling plutonium into the area.
Terrorists seeking ransom suspend Sandburg and group of hostages in a high-rise elevator; guest Clarence Clemons.
A former military intelligence officer who runs a drug-smuggling operation kidnaps Ellison; guest Steven Ford.
Ellison partners with a beautiful, no-nonsense arson inspector to investigate a string of warehouse blazes.
Ellison must hide his abilities when he teams with his nemesis to bring corrupt cops to justice.
When Ellison investigates the influx of a designer drug his contact with the substance leaves him temporarily blind.
Ellison searches for a serial bomber targeting African-American churches.
A Chilean druglord's enemies kidnap his daughter while she is in Ellison and Sandburg's protective care.
Sandburg's mother (Leigh Taylor-Young) gets caught up in a trap Ellison has set to catch violent car-jackers.
Ellison and Sandburg hunt for an elusive killer on a mazelike, offshore oil rig.
Ellison develops feelings for a young graduate student who works as a prostitute running an international extortion scheme.
A pushy camera crew hinders Ellison's pursuit of bank robbers when they film a day in the life of the detective.
Ellison negotiates a truce between two rival street gangs; then a murder destroys it.
Ellison and Sandburg investigate a murder at Banks' high-school reunion.
Ellison becomes a suspect in a murder-for-hire case involving a kidnapping and his former partner who disappeared along with the ransom money.
Ellison is frustrated by the uncooperativeness of the popular singer he is safeguarding from an obsessed fan.
Ellison's special abilities disappear while searching for a missing Capt. Banks in the Peruvian jungle.
Sandburg and Ellison (Garett Maggart, Richard Burgi) become suspects when a monk is found murdered during their weekend retreat at a secluded monastery.
Ellison's strange attraction to a beautiful woman during a jewel-heist case leads Sandburg (Garett Maggart) to identify the diamond thief.
Sandburg (Garett Maggart) jeopardizes Ellison's investigation of an international weapons cartel when he falls in love with the daughter of the cartel leader.
An urban terrorist threatens to release a canister of Ebola virus unless Ellison (Richard Burgi) helps him steal an Air Force reconnaissance plane.
Flu-stricken Ellison (Richard Burgi) suffers adverse effects from medicine while escorting a police informant via train to the witness protection program.
An elusive serial killer who adopts the identity of each victim targets Sandburg.
The investigation of murders at a gang-connected drug lab leads Ellison (Richard Burgi) to a corrupt cop.
Ellison's seemingly impossible identification of a police officer's killer prompts charges of manufacturing evidence.
Sandburg (Garett Maggart) becomes a hostage when a paramilitary group takes over the central police department.
An anthropologist (Garett Maggart) teaches a police detective (Richard Burgi) how to use his heightened senses to fight crime.