Con men

A confidence trick (synonyms include confidence game, confidence scheme, ripoff, scam and stratagem) is an attempt to defraud a person or group after first gaining their confidence, used in the classical sense of trust. Confidence tricks exploit characteristics of the human psyche, such as credulity, naïveté, compassion, vanity, irresponsibility, and greed.

The perpetrator of a confidence trick (or "con trick") is often referred to as a confidence (or "con") man, con-artist, or a "". Samuel Thompson (1821–1856) was the original "confidence man." Thompson was a clumsy swindler who asked his victims to express confidence in him by giving him money or their watch rather than gaining their confidence in a more nuanced way. A few people trusted Thompson with their money and watches. Thompson was arrested in July 1849. Reporting about this arrest, Dr. James Houston, a reporter of the New York Herald, publicized Thompson by naming him the "Confidence Man". Although Thompson was an unsuccessful scammer, he gained reputation as a genius operator mostly because Houston's satirical writing wasn't understood as such. The National Police Gazette coined the term "confidence game" a few weeks after Houston first used the name, the "confidence man."

A confidence trick is also known as a con game, a con, a scam, a grift, a hustle, a bunko (or bunco), a swindle, a flimflam, a gaffle or a bamboozle. The intended victims are known as "marks", "suckers", or "gulls" (i.e., gullible). When accomplices are employed, they are known as shills.

A short con or small con is a fast swindle which takes just minutes. It typically aims to rob the victim of everything in his or her wallet.

A long con or big con (also, chiefly British English: long game) is a scam that unfolds over several days or weeks and involves a team of swindlers, as well as props, sets, extras, costumes, and scripted lines. It aims to rob the victim of huge sums of money or valuable things, often by getting him or her to empty out banking accounts and borrow from family members.

...
Wikipedia