Parker has his hands full when he has to Backstep to prevent the death of the U.S. President's rebellious daughter at the hands of a vicious killer.

A missile test disaster sends Parker back in time to find a beautiful revenge-minded thief who has stolen the device that will cause the disaster.

An astronaut returns with an alien virus that makes him irresistible to women, and Olga soon finds herself pregnant with a clutch of alien babies.

Parker ignores phone calls from someone claiming to be an old girlfriend, Deloris, until she carries out her threat to paralyze the nation's air traffic control system.

A wiring problem causes an explosion at the wedding of Princess Lisette, and Parker must Backstep to protect the Princess and Olga, after discovering terrorists were responsible.

A top secret weapon project test gone awry seemingly kills all life on Earth except Parker, Olga, and Owsley who are deep underground in a secret government facility. Now they must make it back in time to Backstep.

A doctor in California destroys the entire state by experimenting with explosive fault line devices, and Parker must prevent a tidal wave from killing over ten million people. Complications arise when he Backsteps and ends up with a strange creature capable of generating temporal disruptions that is intent on destroying Backstep.

Unaware that a vengeful Chechen rebel is tracking him, Parker leads terrorists to Project Backstep.

Olga and Parker get romantically involved when he backsteps to save her life after she encounters terrorists blowing up an oil line in the wilderness area she's vacationing in.

When the Pope is assassinated, a mixed-up Backstep occurs and Parker finds himself occupying the body of the Holy Pontiff.

A falling scaffolding hurts Parker, and as Olga keeps vigil over him in his coma, she professes her love for him just as he wakes up to hear her. Through an increasing series of dares they end up getting married . . . but all is not what it seems.

Parker Backsteps to save a Nobel Peace Prize recipient, but passes through the side of an airline flight, causing it to crash. A boy on board the plane is taken along with Frank into the past, and he must save the Peace Prize winner, stop the crash, and help the boy save his grandfather.

Parker discovers a secret lab at Never Never Land with an alien alive from the Roswell UFO crash - the alien escapes and sets off a nuclear disaster.

When Talmadge becomes incapacitated because of an apparent brain aneurysm, Nathan Ramsey is appointed as his successor, and Ramsey immediately begins to implement Parker's removal.

A militia leader detonates a nuclear bomb in Washington, but the Backstep goes awry when the Sphere goes back without Parker - the team has 7 days to figure out what disaster is coming and resolve it before it's too late, and all they have to help them is a reluctant psychic who was part of one of Mentnor's past experiments.

Parker Backsteps to stop Fidel Castro's son Teo, a boxer, from being murdered in his comeback fight - an incident that leads to Castro launching a nuclear missile strike on Miami.

Parker must decide whether or not to heed the words of a man who claims to have Backstepped from the far future, and warns that Earth's safety depends on the death of a revered holy man.

A scientist comes up with a cure for cancer, unaware it will unleash a deadly plague. The NSA of 168 years in the future send back an assassin to kill her before her "cure" wipes out the world.

Parker must prevent the U.S. President from being blackmailed after agents of a South American dictator steal his private psychiatric tapes.

Parker backsteps to save Olga's sister, Svetlana, from the Russian mafia.

After a disastrous confrontation between a religious cult and the U.S. government, Parker is sent back in time to undo the event.

Parker is sent back in time by a dying Olga to stop the spread of a deadly mutated Ebola virus.

Good-Frank tries to make his way to Backstep to stop Starker from initiating his military coup and taking over the U.S. government (with the aid of Parker's evil duplicate) while the U.S. and China are on the brink of nuclear war.

Atmospheric interference causes Parker to return from a back-step with a woman who died fifteen years ago, and whose presence threatens to unravel the fabric of the universe.

A former Backstep pilot, thought to be dead, seeks revenge by trying to sabotage the Sphere.

The President and Vice President were killed in a terrorist attack. Now it seems that a secret branch of the government has in their possession technology from the alien landing at Roswell, and they were able to use it to create a time machine that can send someone back in time seven days. And they would like to send someone back before this happened and tell what's going to happen before it does so they can prevent it. Now all they need is someone to send back, as the trip is excruciating. Frank Parker is an ex-Navy SEAL and CIA operative who has been confined to a mental hospital. He has been chosen as their "chrononaut" (or time traveler), as he has a high tolerance for pain, but at the same time he's a bit of a wildcard, as he doesn't like to be told what to do, or follow rules.

When a Russian spy submarine gets trapped on an ice shelf off the coast of Alaska, its nuclear fuel is released into the atmosphere, causing widespread devastation. Parker must link up underwater with the submarine before it happens again.

Teens playing video games are actually being used to pilot missiles.

After a sabotaged Backstep, Parker seems to be killed. Now a disembodied Parker must somehow convince Olga he's not dead.

Parker must prevent a terrorist plot to have American planes bomb a U.S. command center in Saudi Arabia, but an accident during the Backstep makes things go a little crazy.

Parker balks when ordered to kill an autistic savant, Walter, whose code-breaking skills are put to use by enemy spies to kill 20 CIA agents.

When Parker and Donovan are to be honored at the White House, they are caught up in an intricate assassination scheme.

A tanker truck filled with a deadly acid explodes killing 86 people and devastating the North Korean embassy and threatening to trigger a war.

Parker is assigned as the "chrononaut" for Backstep. While memorizing all the mission details, Parker discovers via TV that his son has been killed by poison gas during the attack on DC. Finally, the backstep is authorized.

Talmadge decides to authorize the use of Backstep in order to save Dr. Jonathan Axelrad, a man with the secret to cold fusion. But everything is not what it seems...

The Vice-President's illegitimate daughter, an Air Force flyer, is shot down in Bosnia. After she's killed along with her Ranger rescue team, and her father kills himself out of grief, Parker must jump back in time to save the mission.

Parker must save Talmadge, who is captured by commandos who intend to torture and kill him for information on Operation Backstep. But when he fails, only his newfound ability to loop time lets him complete the mission.

When a reverend fighting against drug deals in Donovan's old neighborhood gets killed, Donovan's sister is killed as well. Donovan investigates and is arrested for killing one of the men responsible, and Frank engineers a Backstep to go back and save his friend.

Parker must go back to his old mental hospital to work undercover to find a killer who influences others to kill and maim based on astrological patterns.

The President's briefcase containing the missile controls is lost on the streets of Washington D.C.