Jailor

Mechanics
The Jailor is a unique role; there can never be more than one Jailor in a match.

Jailing a target
Jail a target during the upcoming night by clicking on the Sun button (day ability) during the day phase.
 * You will visit your target, which is observable by a Lookout.
 * Your jailed target is roleblocked. This overrides Roleblock Immunity.
 * Your jailed target will be immune to all attacks and visits by a, , , , , , and  role. Your target is not immune against your own execution or suicide.
 * Attackers will get a message as if they had Night Immunity.
 * The Transporter and Witch will be notified that their visit failed. The Blackmailer will not be notified.
 * Your target will be notified of any of these visits, except for a failed transport.
 * You will not receive any messages of any of these visits.
 * A visiting your target will not retaliate if the target is attacked. This spells tragedy in the case of a  attack, in which the Werewolf will kill both the Bodyguard and you, but escape alive.
 * If you jail a or a  (during full moon) and don't execute them, they will attack you and any other roleblockers visiting them. This will occur even if they leave the game.
 * If the jailed Serial Killer attacked you, you will receive a different message: You were attacked by the Serial Killer you jailed!
 * Your death message will not notify you that you jailed the Werewolf; you will only know that you were attacked by them.
 * You can be protected by a or  from this attack.
 * If a dead Medium seances you, you will listen and talk to both your prisoner and the Medium at the same time. However, your prisoner won't be able to hear what the Medium says.

Executing a target
Execute your prisoner by using the night ability button. You have three executes.
 * You cannot execute on the first night, even if you are controlled by a Witch. You will still receive the notification that you did not perform your night ability.
 * You can be roleblocked from executing.
 * If you execute a member, you lose your remaining executions.
 * If a Witch controls you into targeting your prisoner, you will be forced to execute them.
 * If a Witch controls you into targeting someone other than your prisoner, you will be unable to execute your prisoner.

Strategy

 * Keep track of your jailed targets in your will and write their names in your will before the night begins. If you jail the Serial Killer and die, the Town will be able to know the Serial Killer's possible identity. This also applies to Werewolves during nights with full moons.
 * Write down any claimed roles in your will immediately before the night ends, just in case you die that night.
 * Do not reveal yourself unless you are protecting a proven Town member, since you are a high priority target for Mafia, Serial Killers, and Arsonists. If anyone else claims to be Jailor, they are lying since your role is unique, so jail and execute them.
 * Take a neutral stance on your prisoner, do not be too trusting, but do not be too eager to execute. Stay level-headed, and don't make rash decisions. If you don't execute an evil, not only do they live a turn, but now the town may believe they have some credibility becuase the Jailor believed them. Even worse, you may die from an Serial Killer or a Werewolf. However, killing a towny will result in the loss of your executions, and your effectiveness as Jailor. Keep yourself composed, and make rational decisions based on fact. Failing that, go with what your gut tells you, not what your inmate says or what other people say.
 *  Collect information from everyone  Unless a town crisis is going on late-game or new evidence has been found about a faked roll then jail as many people as possible and try to get info from them before they figure out who is the jailer. If you are following this strategy then make sure you take a night where you jail no one to throw the mafia off the scent (which may backfire into them killing a different townie who could be the retributionist, spy, mayor or sheriff).
 * When you jail someone, make sure to ask their role. If the jailed target claims a role like Investigator or Sheriff, get all the information you can. Your target will be notified when you decide to execute them. Executing first can make many evil roles panic and you can execute them if you believe they are bad.
 * Consider using a code word. If you tell your prisoners a code word and you are voted to the stand, you can say this code word to win votes to save yourself and remain anonymous. If the townies trust this person that will defend you, they will usually be more than willing to vote you innocent. Likewise, if you say your code word and you are not defended by the people whom you told your code word to, you can use that as suspicious evidence to tell to a Medium, if there is one, in the event that you are lynched. A well-hidden code word in a sentence will enable you to tell your ex-prisoners that you are the Jailor while keeping other people unknown to your role. You can use ex-prisoners and any other person's reactions to that code word and votes as a way to tell what side they are on. If you know an ex-prisoner to be an ally, bait yourself to be put up to the stand and gather some evidence! Keep in mind that evil roles you may have jailed can steal your code word, risking you revealing your role and becoming a target for killers or letting an evil role get away. Another way is to make a sentence, then give each person you jailed but not executed a word that's part of the sentence. You can use that when you're about to get lynched. Type out the sentence and those that are part of the sentence will be able to know you're the jailor. That way, even if the evil roles gets a word, they can't use it when they get lynched since they would have to type an exact sentence to be able to win innocent votes. Just make sure the sentence isn't that obvious or simple. Make it obscure enough so that people can't make up a sentence that might have enough words to save themselves. Another advantage to code words is that it can sometimes let you verify someone's claim of being a Medium. If a townie you previously gave your code to has died and someone you're jailing for the first time claims to be a Medium, they should be able to get the code from the dead... provided they are still active while dead.
 * Keep track of Mafia killings and Arsonist douses. If no one is doused or killed, there is a good chance your target is a kill-capable Mafia or an Arsonist. Beware that if the Mafia have both a Mafioso and a Godfather alive, you will be unable to block them from killing by jailing either one of them. Many times the Mafia will not kill in order to have the Jailor believe that the last person they had jailed is a killing role so that the Jailor would rejail and execute or lynch that prisoner.
 * If you execute someone, be sure to state the reason or evidence for doing so in your Death Note or Will.
 * If the Mayor reveals himself, you can jail him in case a Serial Killer, Arsonist or the Mafia targets him, since a revealed Mayor is a high priority to those roles due to the increased voting power. Note that if you both are revealed, a Witch may easily be able to make you execute the Mayor.
 * You are not control immune. Never state who you are going to jail aloud or you may be controlled by a Witch to execute, or not execute your prisoner.
 * The Jailor can act as a protection role, as the prisoner is immune to being attacked. If the prisoner is doused and the Arsonist ignites while they are in jail, the prisoner will not be ignited. The Jailor can use this to the Town's advantage by jailing those who need to be protected, such as a revealed Mayor. However do this at your own risk, as you might get attacked, missing the chance of possibly executing the evil roles.
 * Executing someone if they have claimed a role that a previous target claimed is a good way to not only kill a Town member, but also to lose your remaining executions which makes you not much of a threat to anyone you jail. Rather, have a confirmed investigative role investigate both targets. Execute the one who has lied. Remember - it's okay to defer executions! Keep in mind that if you jail two people and they both claim the same role, the first person isn't always telling the truth!
 * There is no need to waste time jailing and killing a confirmed Executioner or a Jester, unless they are distracting the town.
 * Be wary of people who claim neutral roles, as these can be either Werewolves and similar roles or they could be telling the truth. Survivors sometimes betray the town, so keep this in mind. If you execute a role like a Survivor, you may have wasted a execution that could have been used against a Mafia member.
 * Never say what your targets have claimed because you will attract unwanted attention (Mafia attention). Beware of what you believe!
 * Mafia and evil neutrals tend to use easy lies such as Medium or Lookout. This goes for everyone you jail but always ask what they have learned to make sure.
 * If you manage to jail a Mafioso and there is no Godfather, you should keep them alive, continually jailing them, while the town safely finds the remaining Mafia. Do not use if there is a Serial Killer, since the Serial Killer can kill you at any time. Keep in mind that a Witch may have teamed up with the Mafia and they might know who the Mafioso is. They could easily force you to execute the Mafioso before everyone finds the remaining Mafia.
 * In addition to asking players their roles, you may ask them to produce some documental proof that they are genuine. For example, you may ask a player who claims an Investigative or Supporting to produce their last wills in jail. This allows you to not only consolidate all town leads, but you can use proven town wills to find the fake wills and narrow down your targets.
 * A Jailor may decide to execute at the start of the interrogation to put more pressure on their targets, and then release the execute button if the target has satisfied the Jailor's tests. The player should not use this tactic if they have a low-end computer prone to freezing as they will not be able to take back their decision for the rest of the night, risking losing all of their executions.
 * Sometimes you might want to be cautious about what you write in your will; reporting claims for important roles like doctors and investigators there could expose them to the Mafia. Generally, though, you should write as much as possible, since preserving information will help the town more than it helps the Mafia. The Town needs that information to win; the Mafia doesn't.
 * If you jail someone who claims Escort, consider telling them who you've jailed (but not the roles they've claimed, unless you trust them completely), and of course, get the list of who they've escorted. Since you're both roleblockers, this lets you narrow down who to roleblock to prevent the Mafia from killing. If the Escort is actually evil, the list of who you've jailed is generally not hugely useful to them.
 * A good way of finding out if someone is bad is telling them a random person's name. if they die by Mafia more likely or not they are bad. But if the person you say you are dies that night. The killer will know you are trying to find out if they are bad.
 * Another good tactic as a Jailor is to always start the execution button to get your prisoner to talk, Many users don't and get reported for 'gamethrowing' it'd be a great help to yourself, and for the game itself as a strategy.

Trivia
Geôlier
 * If you are killed by the Serial Killer on the first day, there is only a ~52% chance that you have jailed them.