Arthur Mitchell (character)

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Arthur Mitchell
Dexter character
ArthurMitchellDexter.jpg
John Lithgow as Arthur Mitchell
First appearance "Living the Dream"
Last appearance "The Getaway"
Portrayed by John Lithgow
Information
Occupation Teacher
Deacon
Charity entrepreneur
Family Vera Mitchell (sister, deceased)
Henry Mitchell (father, deceased)
Marsha Mitchell (mother, deceased)
Spouse(s) Sally Mitchell (wife, deceased)
Children Jonah Mitchell (son)
Rebecca Mitchell (daughter, deceased)
Christine Hill (daughter, deceased)

Arthur Mitchell, often referred to as the "Trinity Killer", is a fictional character in the Showtime TV series Dexter. The character is portrayed by John Lithgow, who won a Golden Globe Award and a Primetime Emmy Award for his performance. He is the main antagonist in season four.

Character overview[edit]

Arthur Mitchell is an unassuming suburbanite and family man — who for 30 years has been living a double life as a serial killer. FBI agent Frank Lundy dubs him the "Trinity Killer" because of a recurring pattern of three killings. First, Mitchell would kill a young woman in a bathtub by slicing her femoral artery with a straight razor while putting her in a choke hold, and holding up a small mirror so that he can see her face as she dies. His second victim is a married mother of two, whom he kidnaps and forces to jump to her death from an abandoned building. His third victim is a father of two, whom he bludgeons to death with a hammer. At each site he places a small sample of his sister's ashes, and arranges the victim's arm to point at the ash. He has repeated this cycle in different cities all over the United States. However, Lundy's superiors doubt that the Trinity Killer exists leading to Lundy's private inquiry into the crimes hoping to close the one case that eluded him during his FBI career.

It is later discovered that, before these three, the Trinity Killer also kidnaps a young boy whom he dresses in cowboy pajamas and convinces to play with a train set in a recreation of his childhood. Following this, he will bury the boy alive in cement at a Four Walls' building site. These killings were not connected to the pattern until shortly before Mitchell's death, because the boys were reported as missing rather than dead.

At first, Dexter Morgan is fascinated by Mitchell's efficient killing methods and apparent ability to balance his familial responsibilities with his secret life as a serial killer.

Family[edit]

Mitchell lives with his wife, Sally, and his teenaged children, Jonah and Rebecca. He has another, older daughter by a previous relationship: Christine Hill, who witnessed one of his murders as a child. He treats her like a shameful secret, forbidding her from contacting him and keeping her existence hidden from his other family. She tries unsuccessfully to win his love, going so far as to commit murder for him; in "Dex Takes a Holiday", she kills FBI agent Frank Lundy, whom Debra has just slept with cheating on her current boyfriend Anton and wounds Dexter's adopted sister Debra to protect her father from the police. In the episode "Hello, Dexter Morgan", Mitchell renounces all ties to Christine, telling her he wishes she had never been born. She commits suicide shortly afterward.

In "Road Kill", it is revealed that members of his family died in the same way as his victims: his sister died in a bathtub in 1959, his mother jumped to her death in 1961, and his father was bludgeoned to death (presumably by Arthur himself) in 1962. In the episode "Lost Boys", it is revealed that he does not kill three victims but four: The first victim of his cycle is a young boy whom Mitchell kidnaps, drugs, and then buries alive in concrete. As the bodies of these children were never found, they were considered to be cases of kidnapping rather than murder, so Lundy never made the connection. With this new information, Dexter concludes that each of Mitchell's victims represents one of his family members, with the boy representing Mitchell himself.

Story progression[edit]

Episode 37[edit]

In season four, Mitchell begins the cycle again, killing his victims at the original murder sites. After killing the woman in the bathtub, Mitchell takes a shower in scalding hot water and, after forcing a mother to fall to her death, he provokes a drunken man into beating him up ("Living the Dream").

Episode 40[edit]

FBI agent Frank Lundy comes out of retirement to hunt Trinity down, but is shot and killed just as he begins to close in on him ("Dex Takes a Holiday"). Lundy had theorized that Trinity was a loner who had no life outside killing. When Dexter goes to kill Trinity, he discovers that Trinity is a husband and father, as well as a prominent figure in a charitable Christian homebuilding organization. He uses this organization to travel around the country to cover for his murder spree, and (it is later learned) as a dump site for the first victim in his cycle.

Episode 43[edit]

Dexter is conflicted over whether to kill Mitchell or learn how he made his family life work. Dexter, under the alias of Kyle Butler, befriends Mitchell and soon learns that, unlike Dexter, Mitchell apparently has no problem being himself with his family or expressing affection. He also witnesses Mitchell's strange, unpredictable personality; the same man who murders people with uncommon brutality starts crying when he and Dexter hit a deer, and is appalled at the idea of putting it out of its misery ("Slack Tide").

Episode 44[edit]

As Mitchell plans a trip to Tampa to build a house, Dexter concocts a plan to go to a meteorological convention to establish an alibi so he has a reason to be in Tampa as well ("Road Kill"). Mitchell reluctantly allows Dexter to tag along when Dexter claims he's done something terrible that only Mitchell can help him recover from. Dexter, hoping to redeem his murder of an innocent man, plans to murder the decidedly guilty Mitchell along the way. During their road trip, however, Mitchell pushes Dexter to admit his terrible deed, and Dexter claims to have killed someone in a hunting accident. This admission greatly affects Mitchell, who sees it as a sign of kinship. He takes Dexter to his old home and tells him that when he was 10, he startled his sister while spying on her in the shower; she fell and broke the glass door, slicing her femoral artery and bleeding to death. His mother later committed suicide by leaping off a building, leaving him in the care of his abusive father; Dexter conjectures that Mitchell bludgeoned his father to death, accounting for the third victim.

For the remainder of the trip Mitchell exhibits sudden mood swings and irrational behavior. He keeps telling random people about his family members' deaths and stresses the need for confession, to the point that Dexter is actually worried that Mitchell might tell people about Dexter's previously mentioned murder. One morning, Dexter sneaks into Mitchell's room, intent on killing him, only to find him gone. Dexter tracks him to a construction site where Mitchell attempts suicide. Dexter reluctantly stops him, wanting to kill Mitchell himself. Dexter contemplates letting Mitchell fall to his death, but as he's about to let go, workers at the site come to help Dexter save him. Afterward, Mitchell has a newfound zest for life, believing God sent Dexter to save him.

Episode 45[edit]

As Dexter gets to know Mitchell, he learns that his would-be mentor is not the loving family man he appears to be; Mitchell dominates his wife, beats his son and keeps his daughter virtually imprisoned in her room. During Thanksgiving, Mitchell's son, Jonah, lashes out at his father, destroying his homebuilder's plaques and smashing his sister's urn. In a fit of rage, Mitchell almost strangles Jonah, but Dexter interferes, dragging him into the kitchen. Just as Dexter has Mitchell at his mercy, however, Mitchell's wife and daughter rush in to stop him ("Hungry Man").

Episodes 46 and 47[edit]

In "Lost Boys", Dexter witnesses Mitchell kidnap a child, but is unable to stop him. Eventually Dexter tracks him down as he's about to bury the boy alive in drying concrete. Dexter saves the boy, but Mitchell escapes. After Mitchell learns from a news report that the boy is alive, and that Dexter didn't turn Mitchell in, he begins to become suspicious. As he tries to find Dexter he kills a man named Kyle Butler, and ultimately follows Dexter to the Miami Metro Police Department and discovers Dexter's real name ("Hello, Dexter Morgan").

Episode 48[edit]

In the last episode of the season, "The Getaway", Dexter subdues Mitchell and prepares to kill him in the room where Mitchell had held the kidnapped child. Mitchell believes Dexter was sent by God to kill him, and claims that he had tried several times to stop killing, but found that he could not change his "path". He predicts a similar fate for Dexter: he tells Dexter "It's already over", the same thing he says to his victims before he kills them. Dexter then kills him with a hammer. It is revealed in the final scene of the episode that Mitchell killed Dexter's wife, Rita, in the bathtub of Dexter's house, and that he left Dexter's son Harrison in her blood, mirroring the childhood trauma that put Dexter on the path to becoming a serial killer.

Episode 52[edit]

Miami Metro detective Joey Quinn suspects Dexter of killing Rita, and he connects the dots as for the identity of Kyle Butler. Anxious to further his investigation, Quinn requests permission from Captain Maria LaGuerta, but she denies his request and orders him to leave Dexter alone. Undeterred, Quinn finds Jonah Mitchell amidst being relocated into witness protection with the rest of his family, and tries to show him a picture of Dexter so that Jonah can confirm whether or not it is "Kyle Butler". However, one of the FBI convoys manages to intercept Quinn's attempt before he succeeds, and so Quinn's query remains unanswered.

Episode 67[edit]

In the sixth season, Dexter hears news about the Mitchell family, who are now living in Nebraska: Mitchell's wife, Sally, and daughter, Rebecca, have been murdered in the same way as were Mitchell's victims. Dexter deduces that Jonah is the killer, and hunts him down. At first, Jonah claims his father killed them both, but later gets into a fight with Dexter, seemingly wanting to die by Dexter's hand. Confused, Dexter gets Jonah to confess that Rebecca actually committed suicide because their mother kept blaming the children for Mitchell's capture; upon finding her, Jonah flew into a fit of rage and killed his mother, bludgeoning her in the same manner that his father killed his victims. Dexter tells Jonah to forgive himself, and leaves.

External links[edit]