Decoded

2010–2012Ended3 seasons24 episodes~60 min/epTV-14

Brad Meltzer's Decoded, is an American mystery and conspiracy theory investigation television series, produced by Go Go Luckey and Berman/Braun, that premiered December 2, 2010 on the History channel. The series is hosted by political thriller author and non-fiction writer Brad Meltzer and follows a team of investigators who try to determine the meanings behind various symbolism, alleged secret codes and conspiracies that surround us every day.

Where to watch

Where can I watch Decoded?

As of October 24, 2026, MovieCove lists Decoded streaming on HISTORY Vault via Apple TV and to rent or buy on Apple TV.

Subscription

via Apple TV

Rent / Buy

Buy

Highlights

What stands out about Decoded?

Decoded earns 1 badge: Cult Classic.

Cult Classic, Reception badge.62% rated it 7 or higher, 23% 4 or lower

Reception

Is Decoded worth watching?

Decoded's Midcredits score is the 23^rd percentile of all shows, from 836 ratings across 2 sources. 62% liked it (rated it 7 or higher out of 10).

Midcredits score

How well it was received

23^rd percentile

Better received than 23% of shows

17^th Documentary22^nd 2010s

Acclaim13^th

Approval35^th

Acclaim

Cult Classic

How much people like it

60 /100

13^th percentile of all shows

7^th Documentary14^th 2010s

Rating distribution

12345678910

votes at each rating level (1–10)

Big peaks at both ends — people either love this or bounce off it hard.

Approval

How many liked it

62% liked it

35^th percentile of all shows

30^th Documentary33^rd 2010s

62% rated it 7–1038% rated it 1–6

Reach

How many have seen it

38^th percentile

830 ratings across platforms

63^rd Documentary45^th 2010s

TMDB popularity, last 37 days to Oct 26Up 20% in 30 days

What reviewers say

Detractors panned

unfocused investigation with superficial research
annoying loud background music drowning out dialogue
sensational tone lacking factual rigor

What stands out

Atmosphere20

melodramatic and disjointed tone

Dialogue20

wooden narration and maddeningly stupid questions

Plot and story15

disjointed arc, no resolution of mysteries

Episodes

2 seasons

Season 2 · 2011 · 13 episodes

S2E1
S2E1
Ft. Knox
Oct 5, 201160 min
Every now and then a researcher will discover a historical enigma, an unproven rumor, a story with a puzzling outcome. Such encounters are an irresistible challenge for Brad Meltzer, the #1 New York Times best-selling author. What if I told you Fort Knox was empty? Buddy, Scott and McKinley travel to Kentucky to investigate the history of the legendary vault, and discover the devastating impact it would have on our economy and our pocketbooks if the gold were gone. Fort Knox has not been audited since 1974, but does that mean the government is shielding its empty pocket book from the prying eyes of the American public, or is the privacy in place to protect a different secret altogether?
S2E2
S2E2
Declaration of Independence
Oct 12, 201160 min
S2E3
S2E3
Mount Rushmore
Oct 19, 201160 min
S2E4
S2E4
Patton
Oct 26, 201160 min
S2E5
S2E5
Spear of Destiny
Nov 16, 201160 min
What if I told you that for two thousand years, many of the world's most powerful men have pursued an ancient artifact they believed would bring them unparalleled power? It's the lance that allegedly pierced Jesus' side while he was nailed to the cross. Known as the Spear of Destiny, it passed through the hands of leaders like Napoleon and Adolf Hitler, and today there are a number of shadowy institutions around the world that are still chasing the Spear. Yet the question remains: does the Spear really exist, or has it been lost forever? Decoded pursues the truth about the Spear across two continents, and tries to solve this centuries-old mystery.
S2E6
S2E6
Billy the Kid
Nov 23, 201160 min
What if I told you Billy the Kid wasn't killed by Pat Garrett? For a more than a hundred years, it's been believed that Sheriff Pat Garrett shot the Kid dead in 1881, but new theories have emerged that Billy in fact survived and went on to live a long life. So how did Billy manage to escape from Pat Garrett, and why would Garrett lie about it? Investigating the life and adventures of the legendary outlaw may prove that the history of the American West needs to be rewritten.
S2E7
S2E7
UFO
Nov 30, 201160 min
What if I told you the government had proof of alien life but was actively covering it up? Millions of Americans believe in UFOs, but the government vehemently denies any alien encounters, from the infamous Roswell incident to the ultra-secretive military base known as Area 51. Finally, members of top military and aviation organizations break their silence to reveal exactly what the government knows about alien life, and what they stand to gain by lying about it.
S2E8
S2E8
Da Vinci
Dec 7, 201160 min
What if I told you that the crystal ball for our future may be found in the work of Leonardo Da Vinci? Experts believe an obscure sketch that was stolen and hidden by a Cardinal in the Catholic Church may be part of Da Vinci's cryptic prophecies. But what exactly was Leonardo predicting, and why was it so dangerous that a Cardinal felt the need to hide it from the world? To comprehend Da Vinci's predictions for our future, the team investigates history's greatest mind, uncovering Da Vinci's controversial political views, his blasphemous obsession with death, and even the mystery shrouding the Mona Lisa's identity.
S2E9
S2E9
2012: The Beginning
Dec 14, 201160 min
What if I told you the apocalyptic prophecies of 2012 were coming true? Across the globe, predictions from Mayan texts to the King James Bible appear to be coming true with eerie accuracy. What can we look forward to on December 21, 2012, the date Mayan astronomers list as the end of time? Will we fall prey to a massive natural disaster, an unnatural disaster brought about by harm to our environment, or will we do what the Mayans did and destroy ourselves? Decoded investigates the science and the psychology behind the doomsday prophecies of 2012.
S2E10
S2E10
Mafia: Alive?
Dec 21, 201160 min
What if I told you that the Mafia and organized crime have taken on a brand new look that most people would never recognize? Today's mob has evolved into something more powerful, sophisticated and deadly than ever. Starting with Al Capone's notorious Chicago Outfit, Decoded traces the progression of the mob from Whitey Bulger's fearsome Irish Mafia, to today's Mexican cartels who are bringing their violent operations onto American soil, and the Cyber Mafia--online gangsters who can steal your money and identity without leaving their home. So what exactly does the new Mafia look like today, and what can we do to protect ourselves?
S2E11
S2E11
Vatican
Dec 28, 201160 min
What if I told you that the Vatican--seat of the Catholic Church--may be responsible for the murder of one of its own popes? Pope John Paul the First was in office just thirty-three days before he was found dead of mysterious causes and whisked away by Vatican officials with no investigation. Decoded travels to Rome and learns that the fallen Pope was at the center of a banking scandal involving Freemasons and even Mafia members operating from within the walls of the Vatican. Some even say that the scandal and the murder were foretold in a prophecy delivered by the Virgin Mary that the Vatican conspired to withhold from its followers. Could Pope John Paul the First, who vowed to reform corruption in the Vatican, have been murdered by the criminals he vowed to expose?
S2E12
S2E12
Houdini: Murdered?
Jan 4, 201260 min
What if I told you Harry Houdini's death was not an accident, as we've been led to believe, but an act of murder? Most contend the world's most famous magician died when one of his tricks went fatally wrong, but new evidence suggests that his death may have been no accident. Most compelling is the long list of famous--and infamous--suspects who all had their reasons for wanting Houdini dead. By investigating Houdini's possible murder, the team discovers the world's most thrilling entertainer may have had an equally exciting life off the stage, including deadly feuds, love affairs, and even involvement in international espionage.
S2E13
S2E13
Devil's Graveyard, Alaska
Jan 20, 201260 minFinale
What if I told you there's a place in Alaska that claims more bodies than the Bermuda Triangle? The Alaska Triangle--the region between Anchorage, Juneau and Barrows--has a disappearance rate sixteen times the national average, and scientists are entirely incapable of explaining why. Is it Alaska's extreme geological activity that creates magnetic anomalies causing instruments--and humans--to act crazy? Or is it vortexes--swirling, turbulent flows of energy--that are causing entire ships, planes and people to disappear without a trace? Local tribesmen, Search and Rescue workers, and the families of the missing all have their theories as to what is causing people in Alaska to vanish off the face of the earth.

Watch experience

What is Decoded like to watch?

Conclusions only — categories and positions, no plot detail.

Earnest, light and gentle — an even-paced watch that leaves you unsettled.

ToneFeelDemandexact position · filled zone: the category

What it asks of you

Even-paced

Demand · Pace

slowrelentless

Engaged

Demand · Attention

casualfull focus

Easy watch

Demand · Emotional cost

easyheavy

Ambiguous

Demand · Resolution

resolvedambiguous

What it feels like

Earnest

Tone · Sincerity

ironicearnest

Light

Tone · Weight

lightdark

Stylized

Tone · Style

naturalisticheightened

Gentle

Feel · Intensity

gentleintense

Steady

Feel · Swings

steadyswings

Straight-faced

Feel · Humor

noneconstant

Moods

TenseCatharticAbsurd

Heaviest: throughout

Melodramatic · 9% of showsBrooding

Told as

Episodic · 11% of showsProcedural · 7% of showsStatus quo each season

ToneThe show plays its conspiracy material at full dramatic pitch — ominous music, dramatic pauses and grand gestures — treating each mystery with earnest sensationalism rather than irony.

The rideThe series maintains a consistently heightened, somewhat theatrical tone across episodes, never settling into a single emotional register.

StructureEach episode is a self-contained investigation into a separate conspiracy topic; nothing carries over between episodes.

Episode formatEach episode is a self-contained investigation into a different conspiracy topic, with no serialized arc connecting episodes.

Season formatSeasons are interchangeable batches of standalone episodes; any episode serves as an entry point.

How it leaves you

what you carry away

UnsettlingFun

Why it leaves you this wayThe sensationalized conspiracy material lingers uneasily, even for viewers who enjoy it as light, thrilling entertainment.

How it ends · evidence

Ambiguous ending

Story archetype

where it sits among all shows

Every story archetype, clockwise from the top

Monster 18%: Predator 7% · Tyrant 3% · Invasion 2% · Oppressive state 3% · Corporate villainy 1% · Institutional injustice 1% · Class system under 1% · Technology turns under 1% · Inner demon 1%
Rags 3%: Underdog triumph 2% · Social ascent 1% · Fame and fortune under 1% · Rise and fall under 1% · Hidden worth revealed under 1%
Quest 6%: Treasure hunt 1% · Rescue 2% · Mission 4% · Journey home under 1% · Pilgrimage under 1%
Voyage 2%: Portal fantasy under 1% · Fish out of water 1% · Survival ordeal under 1% · Time displacement under 1% · Descent under 1%
Comedy 12%: Romantic comedy 2% · Comedy of errors 3% · Farce 2% · Buddy comedy 1% · Comedy of manners 2%
Tragedy 4%: Hubris 1% · Obsession under 1% · Corruption arc 1% · Doomed love 1% · Crushed by fate 1%
Rebirth 7%: Redemption 1% · Healing 3% · Liberation 2% · Second chance 1%
Mystery 8%: Puzzle 1% · Investigation 6% · Enigma 1%
No archetype 40% (this title)

No archetype fits — true of 40% of shows: ensemble pieces, satire, slice-of-life.

Why this archetypeNon-narrative documentary: each episode investigates a different conspiracy theory rather than telling one overarching story.

What it's about

7 groups · 53 themes

Every theme, clockwise from the top

Bonds 31%: Romantic love 10% · Marriage 2% · Family bonds 22% · Parenthood 1% · Friendship 18% · Loyalty 7% (this title)
Self 27% (this title): Identity 20% · Coming of age 9% · Aging under 1% · Self-worth 7% · Ambition 14% · Purpose 16% (this title) · Memory 3% · Obsession 2% (this title)
Power 7%: Power 5% · Corruption 3% · Greed 2% · Class 4% · Oppression 2% · Freedom 4%
Morality 11%: Justice 14% · Duty 2% · Revenge 1% · Guilt 1% · Redemption 3% · Forgiveness under 1% · Sacrifice 2% · Betrayal 3% · Deception 6%
Survival 9%: Survival 12% · War 1% · Violence 2% · Mortality 2% · Grief 4% · Trauma 5% · Mental illness under 1% · Addiction under 1% · Illness and disability under 1%
Society 10%: Community 25% · Isolation 3% · Prejudice 2% · Displacement 1% · Faith 1% · Tradition vs change 3% · Fame 5% · Legacy 3%
Ideas 5%: Fate 1% · Free will under 1% · Truth 6% · Hope 4% · Nature 3% · Art 2% · Technology 1%

Self

PurposeObsession · 2% of showsLoyalty · 7% of shows

Observes its themeSocietal stakesEnsemble lead

How it treats its themeThe series fixates on the search for hidden truths and the purpose of uncovering them, while also exploring the obsessive nature of conspiracy investigation.

StanceThe show presents conspiracy theories with a neutral, observational posture, neither fully endorsing nor debunking them, though its sensationalist framing leans toward entertainment over analysis.