How to capture a Prisoner[]
The Vampire Power 
Dominate allows you to Subdue lifeforms with an active blood type targets and convert them into loyal Servants or Prisoners.
To successfully Subdue a target for conversion to a Servant, you must first reduce their health below 30%, activate Dominate, and channel the 
Dominate Spell (default key R) to dominate the target. The target may still attack during the channel.
Once a target is dominated / Subdued they will enter a neutral, dormant state where their attacks are disabled, ready for imprisonment. While subdued they can still take damage, so it is recommended to use 
Dusk Caller to transport them safely. Subdued enemies can be placed into any prison cell, allowing for prisoner trading between players.
Prisoners cannot be dominated or killed during raids.
Perks[]
- Has Matching Floor (Prison Flooring): -25% Blood Drain & Essence Extraction health costs.
Usage[]
Once a victim has been imprisoned, multiple actions may be performed on them: Drain Blood, Extract Blood Essence, Feed Prisoner, Subdue & Kill.
Drain Blood[]
The first and primary use case for the Prison Cell, is to drain a prisoner's blood to fill 
Empty Glass Bottles,
creating 
Blood Potions or 
Blood Merlots. These can be mixed at the 
Blood Homogenizer, or consumed by the player to maintain a blood type & quality equal to the prisoner's. Blood can be drained indefinitely at the cost of -30% ~ -60% or -25% ~ -50% of the prisoner's health, and a +10% ~ +20% or +5% ~ +15% increase to their misery percentage.
If the victim suffers too much damage and runs out of health, they will be permanently killed. It is therefore recommended to always ensure that a prisoner is well-fed before their blood is drained. Additionally, a prisoner's misery also has to be taken into account, as their damage taken will be increased by that percentage.
Assuming a full health prisoner, making a Blood Potion / Blood Merlot can be done safely at any misery level below 66% / 100%, or 122% / 166% with the 
Prison Flooring bonus active. See the formula below:
Extract Blood Essence[]
The second, less relevant use case for prisoners, is to extract 
Blood Essences from them, at a cost of -10% ~ -30% of their health and a +2% ~ +6% increase to their misery percentage.
Feed Prisoner[]
Feeding prisoners is how their health is restored, as well as how their misery may be reduced. See below.
| Item | Health Increase | Misery Reduction |
|---|---|---|
 Rat
|
20% — 30% | |
 Fat Goby
|
100% | |
 Rainbow Trout
|
10% — 15% | |
 Fierce Stinger
|
20% — 30% | 5% — 10% |
 Twilight Snapper
|
20% — 30% | 10% — 15% |
 Sage Fish
|
30% — 70% | 10% — 20% |
 Blood Snapper
|
50% — 75% | 5% — 10% |
 Swamp Dweller
|
10% — 100% | 20% — 40% |
 Golden River Bass
|
80% — 100% | 15% — 25% |
 Corrupted Fish
|
-100% — 100% | -25% — 25% |
| Alters the blood quality of the prisoner by -2% — 2%. | ||
 Irradiant Gruel
|
Increases the blood quality of a prisoner by 1% — 2%, but has a 35% chance to turn the prisoner into a raging mutant. | |
Corrupted Fish Statistics[]
Perhaps counter-intuitively, if the Prisoner is fed a sufficiently high number of Corrupted Fish, (and is at 0% misery each time) it is guaranteed to eventually reach 100% Blood Quality. The probability of succes in n fish attempts can be calculated with a simple symmetric random walk formula:
Subdue & Kill[]
Subdueing a prisoner allows them to be moved to a different Prison Cell or put in a 
Servant Coffin.
Note that conversion to a Servant is irreversible. There is no option to set a prisoner free. Finally, they may also be killed outright.
Werewolves[]
An imprisoned human with werewolf capability will turn back into a werewolf at night. Previously this would cause them to escape their cell, but with the Oakveil expansion they now remain imprisoned, and retain their blood quality. This is enables you to drain both 
Worker Blood and 
Creature Blood from the same prisoner.
Workers from Gracefall Village have an increased probability of being high blood quality.
Limitations[]
Hand of Dracula, Sanguinary Guard, Dreadhorns, Gargoyles & Worm Terror cannot be Dominated and turned into Prisoners, even though they have an active blood type.
