stylistic:tone, linguistic:paraphrasing
The Secret World of Lewis Carroll (2015) BBC documentary

A BBC documentary from 2015, The Secret World of Lewis Carroll, critically examined Dodgson's relationship with Alice Liddell and her sisters. It explored the possibility that Dodgson's rift with the Liddell family (and his temporary suspension from the college) might have been caused by improper relations with their children, including Alice. The research for the documentary found a "disturbing" full frontal nude of Alice's adolescent sister Lorina during filming, and speculated on the "likelihood" of Dodgson taking the photo. However, it was later revealed the timeline for this research had more than met the eye. The photo currently exists in the archives of the Musée Cantini in Marseille, and was attributed to Dodgson by a currently unknown hand. It was subsequently revealed in early 2015 by the Carroll scholar Edward Wakeling that the photo first appeared in the 1970s, when it was owned by Parisian photo collectors. The provenance of the photo's link to Dodgson could be questioned. It was left to the Musée de Cantini. There was no link to Dodgson, and no link to the Liddell family. This was not explained in the documentary. The documentary raised suspicions about Dodgson being a "repressed paedophile", as one of the interviewees, Will Self, put it. This aspect was leaked to The Telegraph a week in advance. When reviewing the documentary, papers sought to link the 19th-century Carroll with 21st-century sexual conduct revelations about recent paedophiles. This attempted link could be considered an act of scapegoating inspired by the media's reactions to the UK's early 2010 Yewtree investigations. When problems about the documentary's conduct and research surfaced, The Times and The Telegraph reported it.

The material in the documentary has come under intense scrutiny by Carroll scholars, including those such as Jenny Woolf and Edward Wakeling, who appeared in it. Woolf claimed that she was not told of the use of the alleged photo until editing of the documentary was underway. Edward Wakeling's paper/review "Eight or nine wise words on documentary making" appeared in March 2015 as part of the Lewis Carroll society newsletter Bandersnatch. Wakeling also echoed Woolf's assertions that he was not given time to talk about the alleged photo. Wakeling claimed, "The documentary knew I could authenticate or not, but they chose to keep it from me as they anticipated my response." Wakeling further criticises in his paper the Cantini photo's authenticity, the BBC's failure to tell participants of the found photo, and several factual errors. Wakeling draws attention to the irregular "trimmed" nature of the photo itself, and no trace of Dodgson's writing. The inscription on the back of the photo, attributed "lewis Carroll" in pencil, "is an unknown hand... so it could have been written by anybody". The photo negative is also missing the personal catalogue number that Dodgson meticulously catalogued his photos under. " usual practice was to add a number on the back of any prints which he had developed". Wakeling also points out that Dodgson never made "full frontal studies...particularly a girl as mature as this.. There's no way the Liddells would have allowed a picture of this kind to have been taken." It is currently unknown whether this photo is by Dodgson, nor who wrote the pencil inscription on the back of it and for what reason. The photo was not included in Wakeling's catalogue raisonné of Dodgson's complete surviving photographs and has remained unused by other subsequent documentaries on Dodgson.

The BBC Trust later ruled that the documentary could not be shown on UK TV in its current form again, as the BBC failed to tell participants of the photo's appearance during filming or give them time to fully react to it.