A mysterious caller offers Sam a chance to return to the present, but a confusing set of circumstances makes him wonder whether he wants to go back.
Sam goes undercover and infiltrates an Irish gang to take down their ringleader who has killed multiple people; Sam learns more about himself while undercover and is worried he is more like his violent father than he thought; Sam finds himself attracted to the gang leader's sister.
Sam and Annie go undercover to solve the case of a murdered airline stewardess and end up being invited to a swinging '70s party.
After a cop bar is bombed by the Weather Underground, Hunt and Sam search for more explosives and soon discover the target of the bombs are members of a secret cop squad; Sam starts seeing a psychiatrist after being shot, leading to his acceptance of being in 1973.
A famous journalist is killed and Sam is convinced the murderer is the same person who committed a 2008 killing he could not prevent; to make up for not solving the 2008 case, Sam goes to great lengths to pin the present murder on him.
When a councilman is shot in the precinct, Hunt locks down the facility until the murderer is found; as Ray and Annie investigate the case, Annie is able to show firsthand that women and their role in society is changing.
Chris and Sam look after a rock star following death threats and the disappearance of one of the rocker's groupies; Chris believes the groupie was part of an alien abduction which Sam thinks could explain why he is in 1973; Sam confronts Maria about not telling him she is Hunt's daughter.
The team investigates a case involving a series of decapitations; Ray is distracted from the case by the arrest of his brother, Eddie, until it becomes clear that Eddie is connected to the headless-bodies, increasing the tension between Sam and Ray.
A bank robbery that may be linked to a Russian mob ignites an old rivalry between the 125 and the 144; Sam is attracted to a social worker but learns there are unexpected complications in romancing her.
Sam is shocked when a suspected kidnapper ends up being his father, Vic, who walked out on his family on Sam's fourth birthday; Sam must rescue Annie from Vic, which unblocks repressed memories, and Sam begins to find clues that might lead him to why he is in 1973.
A gunman tries to force a doctor to reverse an operation on his brother.
Racial tensions run high when a young black girl is killed and a race begins between the cops and the BLA to find the supposed killer; Sam teams up with Fletcher Bellow, a young detective in 1971, who is his captain in 2008.
Sam finds his mother, Rose, in debt to a local mobster known for killing women that cause him trouble; Sam finds out the cops of the 125 are in cahoots with the mobster and ignore his illegal activities for tips on other mobsters.
Lt. Hunt takes matters into his own hands when a Vietnam vet is murdered and the complicated case leads Sam to some information about his family's past.
Sam investigates a series of fatal robberies at cash-checking stores while evidence points to someone in the squad being involved.
NY police officer Sam gets hit by a car and finds himself in 1973 New York; while still in the past, Sam starts following a murder case all while getting back to 2008.
Sam Tyler adjusts to the alternative world of crime fighting in the 70s.
Life On Mars movie trailer - Genre: Comedy
A New York City cop gets hit by a car in 2008 - and wakes up in 1973. With no cell phone, no computer and no means of escape, he has to work with his 1970s partners to solve a crime that is inexplicably linked to his future.
Life on Mars may come in the form of extremophiles.