John Doe - Season 1

A boat full of Cambodian fishermen can't believe their eyes when they find a naked man floating along the Seattle coastline. Quickly they take the stranger on board and bring him to shore. The mysterious man is unharmed, but can't remember anything, not even his name, and seems to be colorblind. The police can't find his identity, his profile doesn't match anything in the database or Missing Persons reports. Despite not knowing anything about himself, he seems to know everything about everything else.

John is fixated on the mysterious woman on the ferry who called him "Tommy". He tries to track her down with the help of the police, but Frank asks him for a favor in return. The police detective has run into a dead end with one of his investigations and wants John's help. Walter Pickford has called the cops after he discovered his pool was filled with human blood.

Once again, Detective Hayes asks for Johns to help unravel a mysterious murder. The cops found a woman's severed lower body, which had DNA from a person named Daniel Bowen. But it appears he is locked in a psychiatric institution and could not have committed the crime.

When the police find the remains of a woman that was murdered over 30 years ago, John is put in the spotlight. It seems that he looks exactly like the suspected murderer Stephen Prescott. Detective Hayes is convinced that there is a logical explanation for the striking resemblance and decides to involve John in the investigation. However, there isn't much known about Stephen Prescott besides the fact that he disappeared under suspicious conditions at the end of the sixties.

John finds hope to discover his true identity when a second person is found in the ocean under similar conditions. John decides to pay his fellow amnesia sufferer a visit, but comes across a security agent who arrests him and brings him to Lieutenant Avery. John finds he must convince the cops to review the case.

When a mysterious art robbery takes place in a Seattle museum, Detective Hayes decides to ask for John's help. During the break-in, a security agent was killed and a valuable ring was stolen. The cameras were unable to capture the burglars, but it does show how John's assistant Karen (Who has a second job in the museum) tries to flee the building. John however is convinced of her innocence and succeeds in exonerating her. Detective Hayes then puts together a list of possible suspects.

John is shocked when a woman arrives at his door, claiming that he is the father of her son, Wesley. 11 years ago she enlisted the service of "VitroChoice", a sperm bank that normally keeps the identity of the donors strictly confidential. She found out John's information by bribing a nurse and hacking into a government computer. John doesn't trust the situation and starts searching for an explanation.

The murder of a private detective by a deaf killer leads John to an enigmatic woman who provides clues about his childhood. He travels to Idaho, where he supposedly grew up, and discovers things aren't quite as they seem.

John Does decides to go on a trip to London. He's struggling to calm himself down due to the claustrophobia caused by being on a plane when a Reverend dies. John finds out he was murdered (poisoned).He has to find the killer, who is on the plane, with a help of some people and others trying to make his job harder

A serial killer, with a fixation on John, is terrorizing Seattle. At each crime scene he leaves a pink envelope, marked with the symbol from John's scar. Inside each envelope there is a sympathy card, earning him the moniker The Mourner, containing a riddle that must be solved in order to find the next scene.

John continues to aids the police in hunting The Mourner, after Lt. Avery is kidnapped.

The team investigates the death of an up-and-coming local DJ. Meanwhile, Rachel re-enters John's life...and has some trouble adjusting.

John helps Frank investigate the disappearance of 4 seemingly unconnected people. Also, Frank fights for custody of his children.

When John finds that a loved one is in grave danger, he must race against the clock to find her in time.

The investigation into a serial kidnapper turns into a homicide investigation, when a local psychic offers her help. Everyone involved, including her, is surprised to find her connected to the case, in an unexpected way. Meanwhile, John is trying to cope with guilt over a recently departed friend.

When a bright flash in the woods produces a US astronaut, John, Frank, and Digger enter into a covert mission to uncover how he got there...and end up in a sticky situation themselves.

When a rogue ex-cop bent on revenge, takes the 12th precinct hostage, John is forced to improvise. He must find a way to stay hidden and save not only the people in the precinct, but all of Seattle as well.

An attractive woman, who has been the victim of a crime, shows up at The Sea seeking John's help. John finds he cannot resist. He is soon wrapped up in a mystery involving controversial research that is sought by those willing to kill for it.

After John is struck by lightning, he is forced to adjust to being "normal" again...just when he was getting used to being unique. Will he regain his abilities in time to catch the latest killer who is trying to play cat and mouse with him? Or will he remain "normal" permanently?

When Digger's lifelong friend is killed, John treks with him and tried to help him find out what happened. John also hopes to find out the truth about his own past, in the process.

John is struck with visions that may help him to finally uncover the truth, and who his true friends really are.