to be from the murderer, in that this letter features numerous errors in spelling and grammar. Scholars have debated whether this is a deliberate misdirection, as the author observed the silent k in "knif[e]" and h in "whil[e]". The formatting of the letter also features a cramped writing style in which letters are pressed together haphazardly; many ink blots appear in a manner which might indicate that the writer was unfamiliar with using a pen. The formatting of the message might point to it being a hoax by a well-educated individual, but some researchers have argued that it is the genuine work of a partly functional but deranged individual. Forensic handwriting expert Michelle Dresbold, working for the History Channel documentary series MysteryQuest, has argued that the letter is genuine based on the peculiar characteristics of the handwriting, particularly the "invasive loop" letter "y"s. The criminal profiling experts in the program also created a profile of the killer, stating that he possessed a deranged animosity towards women and skills at using a knife. Based on linguistic clues (including the use of the particular spelling of the word "prasarved" for "preserved"), Dresbold felt that the letter showed strong evidence that the writer was either Irish or of Irish extraction, indicating a possible link between the letter and known Ripper suspect Francis Tumblety. Tumblety was an itinerant Irish-American quack doctor who was mentally ill and who had resided in London during the year of the murders. He had multiple encounters with the law and a strong dislike of women, as well as a background collecting body parts. However, after arresting him at the time as a suspect, the police ended up releasing him on bail, having failed to find hard evidence against him. He ultimately died of a heart condition in the U.S. in 1903. Sugden has also written that the author may have had an Irish background but also stated that he may have had Cockney mannerisms. The purported diary of James Maybrick, another man who has been proposed as a Ripper suspect, contains references to the "From Hell" letter, particularly the alleged cannibalism. However, even if the diary is assumed to be genuine, the handwriting does not match that of the letter at all. A Kirkus Reviews article has referred to the diary rumor as a "hoax" that is one of several "bizarre hypotheses" relating to the case. In popular culture