
The"Dear Boss" letter was a message allegedly written by the notorious unidentifiedVictorianserial killer known asJack the Ripper. Addressed to theCentral News Agency ofLondon and dated 25 September 1888, the letter was postmarked and received by the Central News Agency on 27 September. The letter itself was forwarded toScotland Yard on 29 September.[1]
Although many dispute its authenticity,[2] the "Dear Boss" letter is regarded as the first piece of correspondence signed by one Jack the Ripper, ultimately resulting in the unidentified killer being known by this name.[3]
The "Dear Boss" letter was written in red ink, was two pages long and contains several spelling and punctuation errors. The overall motivation of the author was evidently to mock investigative efforts and to allude to future murders.[4] The letter itself reads:
Dear Boss,
I keep on hearing the police have caught me but they wont fix me just yet. I have laughed when they look so clever and talk about being on theright track. That joke about Leather Apron gave me real fits. I am down on whores and I shant quit ripping them till I do get buckled. Grand work the last job was. I gave the lady no time to squeal. How can they catch me now. I love my work and want to start again. You will soon hear of me with my funny little games. I saved some of the properred stuff in a ginger beer bottle over the last job to write with but it went thick like glue and I cant use it. Red ink is fit enough I hopeha. ha. The next job I do I shall clip the ladys ears off and send to the police officers just for jolly wouldn't you. Keep this letter back till I do a bit more work, then give it out straight. My knife's so nice and sharp I want to get to work right away if I get a chance. Good Luck.Yours truly
Jack the RipperDont mind me giving the trade name
PS Wasnt good enough to post this before I got all the red ink off my hands curse it. No luck yet. They say I'm a doctor now.ha ha[5]


Initially, the letter was considered to be just one of manyhoax letters purporting to be from the murderer.[6] However, following the discovery of the body ofCatherine Eddowes inMitre Square on 30 September, investigators noted a section of theauricle andearlobe of her right ear had been severed,[7] giving credence to the author's promise within the letter to "clip the lady's ears off". In response, theMetropolitan Police published numeroushandbills containing duplicates of both this letter and the"Saucy Jacky" postcard in the hope that a member of the public would recognise the handwriting of the author.[n 1] Numerous local and national newspapers also reprinted the text of the "Dear Boss" letter in whole or in part. These efforts failed to generate any significant leads.[10]
Following the publication of the "Dear Boss" letter and the "Saucy Jacky" postcard, both forms of correspondence gained worldwide notoriety. These publications were the first occasion in which the name "Jack the Ripper" had been used to refer to the killer. The term captured the imagination of the public. In the weeks following their publication, hundreds of hoax letters claiming to be from "Jack the Ripper" were received by police and press alike, most of which copied key phrases from these letters.[3]
In the years following the Ripper murders, police officials stated that they believed both the "Dear Boss" letter and the "Saucy Jacky" postcard were elaborate hoaxes most likely penned by a local journalist.[n 2] Initially, these suspicions received little publicity, with the public believing the press articles that the unknown murderer had sent numerous messages taunting the police and threatening further murders. This correspondence became one of the enduring legends of the Ripper case. However, the opinions of modern scholars are divided upon which, if any, of the letters should be considered genuine. The "Dear Boss" letter is one of three named most frequently as potentially having been written by the killer, and a number of authors have tried to advance their theories as to the Ripper's identity bycomparing handwriting samples of suspects to the writing within the "Dear Boss" letter.[3]
Like many documents related to the Ripper case, the "Dear Boss" letter disappeared from the police files shortly after the investigation into the murders had ended.[12] The letter may have been kept as a souvenir by one of the investigating officers. In November 1987, the letter was returned anonymously to the Metropolitan Police, whereupon Scotland Yard recalled all documents relating to the Whitechapel Murders from the Public Record Office, nowThe National Archives, atKew.[13]
In 1931, a journalist named Fred Best was reported to have confessed that he and a colleague atThe Star newspaper named Tom Bullen[14] had written the "Dear Boss" letter, the "Saucy Jacky" postcard, and other hoax messages purporting to be from the Whitechapel Murderer—whom they together had chosen to name Jack the Ripper—in order to maintain acute public interest in the case and generally maintain high sales of their publication.[15][n 3]
In 2018, aforensic linguist based at theUniversity of Manchester named Andrea Nini stated his conviction that both the "Dear Boss" letter and the "Saucy Jacky" postcard had been written by the same individual.[9] Commenting upon his conclusions, Dr Nini stated: "My conclusion is that there is very strong linguistic evidence that these two [pieces of correspondence] were written by the same person. People in the past had already expressed this tentative conclusion, on the basis of similarity of handwriting, but this had not been established with certainty."[17]