- Send direct signals in a way that the coercer won't notice and/or understand. For example, you could use a Public Secret Message, deliberately botch code phrases or other prearranged signals, and act strangely so as to trigger an Out-of-Character Alert or fail a Bluff the Impostor test.
- Actively try to get caught out, such as by leaving evidence which is too subtle for your coercer to spot (but which someone else is likely to notice) or by exposing yourself to situations where your lie will be detected without you actively revealing it (such as a Lie Detector, Living Lie Detector, or Evil-Detecting Dog).
- Reveal the deception in the guise of carrying it out, such as going overboard in the deception to the point where people are actually more likely to notice it, giving a Suspiciously Specific Denial when there's no need to, or saying that you could say the important information, but...
- Give your coercer bad advice — for example, suggest something that is actually the target's Berserk Button, or neglect an important detail that the coercer doesn't know to ask about.
- Ensure that the people you're being forced to betray are well stocked with Betrayal Insurance.
- Make sure everyone knows you're dishonest in a general sense, even if you can't tell them outright about this specific instance, or just exhibit all the hallmarks of a Bad Liar when delivering the lie.
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Anime and Manga
- In an issue of Fantastic Four, Reed Richards is going along seemingly willingly with a Skrull Sue imposter. When he passes by the robot secretary the FF used at the time, he tells her to "tell it to the Marines," which she looks up in an idiom database and discovers it means he's lying.
- In the fourth Dirty Harry film, Sudden Impact, the diner Harry Callahan goes into is being robbed, and the robbers force everybody to act normally while Callahan is there. Callahan has been getting coffee there for ten years and never has sugar, but this time, the waitress adds a ton of it. The robbers don't see anything unusual, but Callahan goes straight back in after his first sip.
- In Serenity, Inara's conversation with Mal probably looked quite natural to the person forcing her to have it, but Mal correctly concludes that since there wasn't any fighting, it was actually intended to lure him into a trap.
- In Quiz Show, Van Doren (who is being given answers in advance by the producers of the titular show) invokes a Suspiciously Specific Denial to ensure that the scheme comes to a halt. He wasn't personally accused at the time, so Goodwin realises that there's no reason for him to have made a point of denying things unless he was trying to get investigated.
Goodwin: I said to myself, "Why would he do this? He knows I'll come after him." And then it occurred to me: He knows I'll come after him.
- In Five Hundred Years After, Aerich is duty-bound not to inform Khaavren what his other friends are up to. Realizing Khaavren really ought to know, he sends Tazendra to converse with Khaavren about something else, knowing she's incapable of keeping a secret.
- In Thud!, a deliberately Revealing Cover-Up is used for this purpose. Helmclever can't stop or expose the villains' operation himself, so he deliberately goes too far in trying to keep their secret, ensuring that as many people as possible receive strict instructions against cooperating with the Watch. In fact, he knows perfectly well that the Watch will see such conspicuous silence as all the more reason to investigate — and that Commander Vimes will be personally angered by it.
- Averted in Wyrd Sisters, where the evil Duke Felmet hires a playwright to write a play that shows him as being in the right, with his predecessor as an evil king and the machinations of the Lancre witches. He sends his jester (who knows the truth, as he saw Felmet murder the king) out to tell the playwright how it happened. While people note he talks with extreme reluctance and has a facial tic as if he's saying something he knows to be wrong, the play is written as demanded anyway.
- In The Dresden Files novel White Night, Thomas Raith is forbidden to tell Harry about the White Court's plans. Therefore he deliberately acts secretive and leaves obvious evidence in his apartment.
- Inverted in another book, where Harry has a meeting with Lilly and Fix when trying to get a fix on a pretty convoluted situation. Fix and Lilly are under a Geas that prevents them from informing Harry about what's going on with Summer's side of things, leaving Harry to puzzle it out himself, but they are able to tell him when he's on the wrong track.
- A Series of Unfortunate Events: In the third book, Aunt Josephine is forced by Count Olaf to pretend to commit suicide and turn over custody of the kids to "Captain Sham" (who is Olaf in disguise). She forges a suicide note, but deliberately fills it with misspellings so the kids pick up on the secret code she wrote for them, since they know their aunt is utterly pedantic about proper spelling.
- In the Choose Your Own Adventure novel Spaceship Traveler, you (the captain of the titular ship) can at one point get captured by aliens, who make a clone of you so they can steal your ship. If you succeed on a willpower roll during the cloning process, you manage to imprint two things into the clone - an urge to always be truthful, and the knowledge of a certain infamous prison planet. When the clone then tries to get the ship crew to beam down, it says the planet "...is as pleasant as [prison planet]", which clues them in that something's up. When they then ask the clone what's really going on, it has no choice but tell everything.
Live Action TV
- The Wild Wild West episode "The Night of the Death-Maker". A group of monks at the Santa Paula Monastery make and sell wine. When their monastery is taken over by the villains, they subtly change the taste of their wine as an S.O.S. signal.
- In Dark Angel, Original Cindy is being used as bait by a villain, and gives warning of this by talking about her supposed new boyfriend despite Max knowing that she's only interested in women.
- In JAG, Admiral Chegwidden subtly informs people that he's being held at gunpoint by referring to a file which relates to another hostage-taking case.
- An example of the misinformation kind of sabotage is an episode of Charmed, where Piper is possessed by a demon without other people being aware that she isn't herself. She warns the demon that her boyfriend "Tom" will see right through it, causing the demon to address said boyfriend as Tom — which isn't his name.
- There was an episode of Psych in which Shawn and Gus were discussing a case via webcam. The murderer (standing off-screen) forced Shawn to give Gus a false lead, which Shawn did while speaking very plainly and seriously. Gus realized something was wrong, knowing that Shawn wouldn't normally talk without over-exaggerating or making a joke.
- Doctor Who: In "Day of the Daleks", the Doctor is held prisoner and then required to reassure the Brigadier that all is well over the telephone. He finds a subtle way to secretly call for help, by using a piece of slang that his captors won't recognize:
"I assure you, Brigadier, there's nothing to worry about. Tell Styles that. Tell the Prime Minister. And, Brigadier, be particularly sure to tell it to the Marines."
- In iCarly in the episode iPsycho, Carly, Sam, and Freddie send a birthday message to their friend Gibby to alert them that they have been kidnapped by their fan Nora by telling him to listen to every third word.
- Criminal Minds: After being kidnapped and tortured by an Un Sub into choosing a colleague of his who will die, Spencer Reid chooses his boss and gives among his many faults which lead to this choice narcissism and pride, even quoting the bible with an appropriate verse... except the team are watching and Hotch realizes almost immediately that Reid is giving the team a clue where he is.
- In Season of Mystery: The Cherry Blossom Murders, the artist Tsukumo is forced (by way of kidnapping his daughter) to make counterfeit art objects. However, he deliberately does flawed, traceable work in the hope that someone more expert than the villains will notice and bust the operation.
- In The Order of the Stick, since Durkon's become a vampire, he's been trying to do this to the spirit impersonating him by being vague with the memories he lets him see (with little success, since it can review them almost instantly).
- In Darths & Droids, when R2-D2 (as played by Pete) was secretly being controlled by Nute Gunray, Pete tried to let other people know it as much as possible. This involved swapping the Ls and Rs of his beeping sounds (as the comic does to satirise the accent given to the character in the film) and acting out of character.
Pete: I was subtly trying to indicate that something was wrong with me! I tried to abandon the party back on Hoth, remember? I was totally acting out of character! Don't tell me none of you noticed?
- There are numerous accounts of prisoners of wars or hostages doing this.
- Operation Bernhard was a Nazi plan to destroy the British economy by forging banknotes and airdropping them in to devalue the pound sterling. Some of the prisoners who were forced to make the counterfeits claim to have deliberately put mistakes in them to invoke this trope.
- POWs, when forced to pose for publicity photos or write a letter of confession, have sometimes given some secret sign to let viewers or readers know how they really feel. Notably, there's an account of the crew of the USS Pueblo captured by the North Koreans.
- POWs have also been asked to write letters home to prove that they're being treated well; many use an encryption scheme to tell matters more truthfully.
- There is also an Urban Legend from various wars about a POW writing home and saying he's being treated well, and asking to steam the stamp off to save for "little Billy", who is a stamp collector. There is no person named anything like "little Billy" in the immediate family/friendship circle. They steam off the stamp to find in small letters underneath "they have cut out my tongue." False because, if nothing else, POWs don't have the opportunity to put their own stamps on their mail.
- One of the problems when 'turning' someone into a double agent is that it is hard to be sure. They may have been given a way to signal they are under enemy control. This could be something as simple as a 'mistake' or a particular piece of punctuation when passing a message.