Dr. Lionel Elliot doesn't like teaching squeamish students, so tries to avoid teaching the Introduction Human Anatomy and Physiology at Kings College, London. However, he was contacted by Elena Ballard, who asked that he pick up some overflow on the course, as there were 7 students without a teacher and he reluctantly agreed.
When he went to the first class, he found them all wearing white t-shirts and blue jeans, although one of the girls may have worn a skirt. He finds it difficult to recall their faces exactly. Their names were Erika Mustermann, Jan Novak, Piotr and Pavel Petrov, John Doe, Fulan Al-Fulani and Juan Pérez. As he taught the class they blankly listened, occasionally asking simplistic questions that one could learn in GCSE Biology. He discussed the lungs and as he paused he heard them breathing, as though it was filling the silence, as if they were not breathing before. He tried to avoid teaching that class as much as possible.
He accompanied the class to a dissection room to learn about skeletons. Whenever he had his back turned to a desk he heard a sound like bone cracking, but when he turned the samples were undamaged. He managed to see behind him in a reflective surface and saw Pavel picking up a forearm bone and holding it to his own, before his forearm cracked, shifted and extended. Lionel collapsed in shock but no one made a move to help him, and half an hour of cracking later they left.
Lionel kept avoiding these lessons, but his coworker Laura Gill said that even when he wasn't there the 7 students would just wait in the room for him.
The next lesson in the dissection room was with hearts, which Lionel attended as he knew that they would attend without him or not. The lesson proceeded normally, with the students asking questions, until Erika held up her heart and asked what it looked like when it beat. The heart in her hand started to beat and she asked if it was like that. The other 6 students did the same, and Lionel indicated the most life like one before leaving.
Lionel avoided the rest of the lessons, but decided to find out where they lived and got their address, and old house in Kingsley Road in Newham, from Elena. When he arrived, Jan opened the door and put on a strange forced smile. She asked him if he had come to teach them, as they wanted to learn about the liver. She looked down towards Lionel's own liver as a muffled scream came from the house. Lionel fled.
After the last tutorial, Lionel returned to the room to find an apple and a note, which read 'Thank you for teaching us the insides', which he burnt. He cut into the apple and found human teeth, arranged in a smile.
Post-Statement Follow-Up Edit
Jonathan Sims declined the offer to keep the apple for the artifact storage, saying that it didn't prove anything, as the teeth could have been put in by someone after the apple had been cut. The teeth were sent to a dental specialist, though, who confirmed that they were all healthy and from different people.
Sasha discovered that Dr. Risheed Sidana killed himself last year. He taught the 'Anatomy, Physiology and Pathology for Complementary Therapy' course at St Mary's University. A note was found with his body which read 'Not to be used for teaching.'
It is worth noting that the names of the 7 students are the names given to unidentified persons in different cultures, such as John Doe.