Grifter's Bone is an urban legend around Alfred Grifter, rumored to be a mediocre musician hungering for fame who eventually turned to the Devil, but messed up the ritual, thus cursing his music to be so awful that he (and possibly his band) have to sneak their way into other bands' concerts for a chance to perform. A common saying among the music business is that "You can always tell Grifter's Bone has been on because of the torn off ears." They are commonly used by music scene oldtimers to jokingly refer to bad music in general.
Jennifer Ling, formerly a music blogger, now had been working for around three years for Earful, a music website. There she learned about Grifter's Bone for the first time from oldtimers. She noticed a weird reaction by one of her coworkers, Lee, who worked as the submissions editor, which involves listening to music sent in unsolicited. Whenever Grifter's Bone was mentioned, he'd be visibly nervous. Ling started to suspect that he must have seen Grifter's Bone live and even went so far as to jokingly imply that the reason he wore his hair so long was to cover up his missing ears.
Ling decided to confront Lee about it while out drinking and learned that he indeed witnessed a "small, cruel looking man in a ragged brown suit" sneaking on stage after going to see an unmemorable metal band. However, he couldn't remember the music, coming to himself roughly two hour later wearing a blood soaked shirt. He showed Ling his scars and perpetually bleeding ears, covered by earplugs.
Despite being unable to find anything substantial about the urban legend, Ling decided to publish a short article about Grifter's Bone, incorporating what she learned from Lee. A comment appears beneath the article saying "Tonight. Soho. No earplugs required." The second line got Lings attention, as she hadn't mentioned anything about that particular detail as per Lee's request.
Ling spent the afternoon looking for Grifter in Soho, until she was approached by a puzzling man, who mumbled something about protecting her hearing, but before she could ask for clarification she spots a small group of people with instruments following the short man.
She followed them into a small jazz club filled with 11 patrons. Ling, remembering Lee's story, left the room after setting up her mobile phone to record the music. She describes the music coming from the bar as the most achingly beautiful music she ever heard, but soon gets intercepted by sounds of screaming and tearing. As she left her phone below, she couldn't call for police, but before she could run for help the screaming stopped. She went to investigate.
The musicians on the stage calmly packed their instruments while the entire audience has been slaughtered. She ran after grabbing her phone. Ling did not call the police, fearing what might happen to her. Nothing about the massacre was reported on the news and her phone wouldn't let her access the footage.
Post-Statement Follow Up Edit
According to Jonathan, the jazz club vehemently denies any sort of violence as described by Jennifer Ling. However, weeks before the alleged massacre, a total of eleven violent deaths had been reported in the greater London area during October 2013. At least one of the victims' description matches Ling's statement.
A followup with the author of the statement was not possible, as Ling assaulted her elderly neighbour with a hammer and subsequently killed herself by repeatedly hitting her own skull. Jonathan voices his suspicion that she finally may have viewed the footage on her mobile phone.
In another post-statement note, Jonathan voices again his suspicions of Martin Blackwood, who has been "very attentive" concerning Jonathan's recovery, almost neglecting his own work. He also states that during Jane Prentiss' attack Martin showed cunning and resourcefulness that doesn't seem to match his apparent incompetence. Jonathan notes that he may be playing the fool to hinder Jonathan's investigation.
Jonathan adds that Martin left a few of his possessions behind when moving out of the institute, among them several books containing bad poetry and an unfinished letter to his mother in Devon, including his fears of "the others finding out I've been lying". Jonathan vows to keep an eye on Martin.