In Crusader Kings III, not every problem is solved with a sword. The Intrigue system lets you murder rivals, kidnap claimants, fabricate blackmail, seduce heirs, and expose embarrassing secrets. Understanding how schemes, hooks, and secrets interact is the difference between a ruler who dies in bed at eighty and one who dies in a dungeon at twenty.

What changed

The base game launched with a unified scheme system that replaced the abstract plots of Crusader Kings II. Schemes are targeted, timed activities with visible progress, success chances, and discovery risk. The Roads to Power and All Under Heaven expansions later added Political schemes for Administrative, Celestial, and other specialized governments.

Three concepts hold the intrigue layer together: Schemes are active plots against or for another character; Secrets are hidden facts such as murders or affairs; and Hooks are leverage gained through favors, blackmail, or fabricated evidence. You can run one Personal, one Hostile, and one Political scheme at the same time, and ongoing schemes can be canceled.

How it works

Scheme mechanics

Every scheme has a Phase Length, which determines how fast it progresses, and a Success Chance, which determines how likely it is to succeed when executed. For Hostile and Political schemes, four additional values matter:

  • Potential sets the maximum Success Chance. Your Intrigue skill contributes up to 30% Potential; the rest comes from agents. Potential normally cannot exceed 95%.
  • Secrecy measures how likely the scheme is to remain undiscovered. The chance of discovery on execution equals the missing Secrecy, and the monthly chance of a Breach equals one tenth of the missing Secrecy.
  • Breaches track how many times the scheme has been exposed. Each Breach reduces Success Chance, and five Breaches cause automatic failure.
  • Advantage is used to execute the scheme or bribe agents. A scheme can be executed once at least 5 Advantage is accumulated, or with 10, 15, or 20 Advantage for increasing Success Chance bonuses. A scheme starts with 1 Advantage for every 5 points of Intrigue above 15.

Hostile schemes rely on agents and secrecy. If they are discovered, the target gains an imprisonment reason on you. Personal schemes do not use agents or secrecy, but a failure usually prevents you from targeting the same character again and may impose penalties.

Personal schemes

Personal schemes are the “friendly” side of intrigue, though their outcomes can still be volatile. They do not use agents or secrecy, and they are often used to improve relationships or create dynastic opportunities.

Base-game Personal schemes include:

  • Sway: Increases the target’s opinion of you.
  • Seduce: Attempts to make the target your lover, with a chance of pregnancy depending on faith doctrines.
  • Romance: Attempts to make the target your soulmate while gaining prestige.
  • Befriend: Requires the Befriend perk. Turns the target into a friend, with stronger effects if they become a best friend.
  • Elope: Requires an existing lover or soulmate. Marries the target and divorces any current spouse.
  • Learn Language: Teaches you the target’s language.
  • Convert to Witchcraft: Attempts to share or create a Witch secret, depending on faith doctrines.

Because Personal schemes cannot be discovered in the same way as Hostile schemes, they are safe tools for shaping alliances and succession. They are not always successful, and failures can damage opinion or create secrets of your own.

Hostile schemes

Base-game Hostile schemes include Murder, Abduct, Fabricate Hook, Claim Throne, Steal Artifact, Overthrow Regent, and Siphon Treasury. DLC adds more, such as Seize Realm for Adventurers and Disbelieve Mandala for Mandala governments. Hostile schemes cannot target your own children unless you have the Sadistic trait, and being at war with the target penalizes Murder and Abduction schemes.

Political schemes

Political schemes are available only to characters with Administrative, Celestial, Meritocratic, Ritsuryo, or certain other specialized governments, primarily through the Roads to Power and All Under Heaven expansions. They have no failure effects beyond stress, and they focus on office politics rather than murder or kidnapping.

Examples include:

  • Promote: Raises a character’s succession score.
  • Slander: Lowers a character’s succession score and Governor Efficiency.
  • Expand Power Base: Increases your own Investment Capacity for succession.
  • Raid Estate: Targets another Noble Family’s Estate.
  • Subsume Governorship: Absorbs a neighboring governorship.
  • Depose: Removes a top liege.
  • Challenge Status: Steals Influence from a ceremonial monarch.

These schemes are powerful because they operate within realms where internal war is restricted. In an Administrative empire, they are often the only way to remove a rival or claim a better office.

Agents

Most Hostile and Political schemes can include up to five agents. Agents must be adult courtiers, guests, or direct vassals of the target who are not imprisoned or already involved in another scheme. Each agent contributes to one or more scheme stats based on their type and their closeness to the target.

Closeness bonuses matter. A target’s spouse or guardian as an agent adds +30 success chance. A personal physician, cup-bearer, food taster, or bodyguard adds +20. A best friend, friend, or lover adds +20 or +30 depending on the exact relationship.

Agents can be persuaded through bribes, prestige, piety, promised titles, or hooks. Using a Strong Hook on an agent forces acceptance. Terrified characters will not become agents unless forced by a Strong Hook.

When selecting agents, pay attention to their personality traits. Compassionate characters are reluctant to join murder plots, particularly against children. Greedy characters are more likely to join if they stand to inherit. Zealous characters may join against targets of a hostile faith.

Hooks

A hook represents leverage over another character. You can only have one hook on a character at a time; gaining a stronger or longer-lasting hook replaces the weaker one. Hooks come in three strengths:

Weak hooks can be used once and usually provide a large acceptance bonus rather than forcing an action. Common sources include:

  • Blackmail over a shunned secret.
  • Favors from events or releasing prisoners.
  • House Head hooks over newborn children.
  • Random events producing Indebted, Manipulation, or Threatened hooks.

Strong hooks can be used multiple times with a five-year cooldown and typically force acceptance. Passively, a Strong Hook prevents the target from joining factions, declaring war, imprisoning you, or demanding religious conversion. Common sources include:

  • Blackmail over a criminal secret.
  • The Fabricate Hook scheme.
  • Loyalty hooks from random events.
  • Saved Life hooks from activities.

Perpetual hooks are permanent and reusable with a five-year cooldown. They act like Weak Hooks in strength but last forever. They are gained from specific sources such as loyal hostages or the Filial Piety tenet.

Hooks can be spent on a wide range of interactions: arranging marriages, demanding council positions, modifying vassal contracts, revoking titles, forcing factionfaction. An in-game group or nation players can align with or fight against, with its own goals and reputation system. membership, inviting characters to schemes, and more. The Golden Obligations perk even lets you sell Strong Hooks back to their targets for gold.

Secrets

Secrets are created when a character does something that is criminal or frowned upon by their faith or culture. Examples include murder, adultery, incest, witchcraft, sodomy, deviancy, cannibalism, illegitimate birth, or practicing a forbidden faith in secret.

Secrets are discovered in two ways:

  1. Random events can expose secrets naturally.
  2. The Find Secrets council task, assigned to your Spymaster, targets a location and uncovers secrets held by characters there.

Once you know a secret, you have two options:

  • Expose it: The target receives negative traits and opinion modifiers. If the secret is severe enough, the target may be imprisoned by their liege.
  • Blackmail the target: If successful, you gain a Weak Hook for a shunned secret or a Strong Hook for a criminal secret. If the target refuses, the secret is exposed anyway.

You cannot blackmail someone over a secret you both share. For example, two characters who both practice witchcraft cannot blackmail each other for it, but they may gain opinion bonuses from shared knowledge.

Build path

A good intrigue build focuses on four things: skill, lifestyle, spymaster, and information network.

  1. Raise Intrigue. Your Intrigue skill directly increases scheme Potential, Advantage gain, and resistance to enemy schemes. Seek Intrigue education, artifacts, and spouses who boost the stat.
  2. Take the Schemer lifestyle. The Schemer branch of the Intrigue lifestyle provides Truth is Relative for Fabricate Hook, Twice Schemed for running two Hostile schemes, Court of Shadows for longer grace periods, and general bonuses to scheme success and discovery resistance.
  3. Control your spymaster. A high-Intrigue Spymaster assigned to Find Secrets is your best source of hooks. Make sure they like you more than your rivals, since a hostile Spymaster is a catastrophic liability.
  4. Recruit agents before you need them. Build relationships with courtiers close to your likely targets: spouses, physicians, bodyguards, and lovers.
  5. Use Countermeasure Focus wisely. You can choose a defensive focus that penalizes enemy Personal or Hostile schemes, but each focus carries penalties to prestige, gold, opinion, or stress.

What it means

The scheme, hook, and secret system gives Crusader Kings III a parallel path to power. A weak county with a cunning ruler can kill a king, steal a throne, or chain-blackmail an entire council. A strong emperor with poor intrigue can be undermined by a single well-placed spymaster.

The system rewards patience and information. Rushing a murder plot with low secrecy is likely to backfire. Waiting until you have the target’s spouse, physician, and spymaster as agents turns a risky gamble into a reliable tool.

It also creates emergentemergent. Behavior that wasn't explicitly designed but arises from simpler rules interacting — player-run economies, cartels, surprise tactics. stories. A seduction scheme can produce a bastard who becomes your heir. A fabricated hook can force a powerful vassal to accept a tyrannical contract. An exposed incest secret can shatter an alliance. Used well, intrigue is quieter than war but just as decisive.