With thievery you can perform a variety of useful tasks. Thieves can gather useful information about your enemies, assassinate enemy units, destroy enemy buildings, and much more. Vermin thieves are notorious for being ruthless and cunning.

Operation Time: Twelve hours per mission. Six hours to the target, six hours back. This can be decreased to half the default time by using thievery guilds.

Maximum Possible Missions Out At Once: Ten missions against up to ten different Kingdoms or as few as one Kingdom.

Thievery Operations for Goodbeasts:
Espionage - Informs you of the target's kingdom type (fort, castle, abbey) and how many points are invested in each of the technologies.
Reconnaissance - Reports the current status of the target's army (number of each unit, listing of home or away and for how long) as of the time thieves arrived.
Rob Vaults - Steals 5-10% of a kingdom's stored gold, no less than 50 gold per thief sent
Rob Granaries - Steals 5-10% of a kingdom's stored bushels, no less than 5 bushels per thief sent
Sabotage - Turns 3-5% of any one non-house building into regular free land
Propaganda - Steals 5-10% of a kingdom's trainables/regular creatures, no more than 1 per every 2 thieves, no less than 1 per every 4 thieves sent
Survey - Gathers information on the target's buildings, construction projects and their estimated bonuses
Larceny - Steals 25-50% of wagons heading to or from target kingdom, whether it be to/from other kingdoms or the market. Wagons contents are all taken, and all wagons are taken until you reach the limit

Thievery Operations for Vermin:
Espionage - Informs you of the target's kingdom type (fort, castle, abbey) and how many points are invested in each of the technologies.
Reconnaissance - Reports the current status of the target's army (number of each unit, listing of home or away and for how long) as of the time thieves arrived.
Rob Vaults - Steals 5-10% of a kingdom's stored gold, no less than 50 gold per thief sent
Rob Granaries - Steals 5-10% of a kingdom's stored bushels, no less than 5 bushels per thief sent
Sabotage - Turns 3-5% of any one non-house building into regular free land
Arson - Turns 3-5% of a kingdom's houses to regular free land
Coercion - Steals 5-10% of a kingdom's trainables/regular creatures, no more than 1 per every 2 thieves, no less than 1 per every 4 thieves sent
Assassination - Kills 5-7.5% of a one random unit type among the trained types
Survey - Gathers information on the target's buildings, construction projects and their estimated bonuses
Larceny - Steals 25-50% of wagons heading to or from target kingdom, whether it be to/from other kingdoms or the market. Wagons contents are all taken, and all wagons are taken until you reach the limit
Spread the Plague- If successful, 5-7.5% of sent thieves die, but the plague enters the target kingdom.

Success or Failure:
For Rob Vaults/Rob Granaries:
[(4*Thieves Sent)*(100%+Target's Thievery Bonus)]/[(7.5*Thieves of Target )*(100%+ Own Thievery Bonus)]= % Chance of success

For Other Missions:
[(3*Thieves Sent)*(100%+Target's Thievery Bonus)]/[(7.5*Thieves of Target )*(100%+ Own Thievery Bonus)] = % Chance of success

Results of Failure: Failure of an operation results in the losses of some thieves in accordance to the equation:
Thieves of Target/(Thieves Sent*.25) = Thieves Lost