Jane Prentiss was a woman of unknown age and origin. She appeared to be possessed by, or contaminated with, unidentified parasitic worms.
She lived and worked in Archway, employed at a crystal shop called Good Energies (MAG 32). During this time, she seemed to have undergone a mental breakdown, possibly due to stress over finances and being rejected by friends. She left her job following the discovery of an infestation of ants in the building’s basement (MAG 32).
Later, she was found by police with her arm buried in a mass of organic material, not unlike a wasps nest, and she was rushed to a hospital. Whilst the nurses were trying to restrain her, she expelled worms into the eyes of those in the room with her, killing 6 of them and leading to the seventh breaking his neck fleeing from her.
The Flesh Hive
Jane was infected with small parasitic worms. The worms are around an inch long, with silver segmented bodies and blackened heads. She seems to have infected Harriet Lee (MAG 6) who transmitted the infection to Timothy Hodge (MAG 26), who was later killed by Sasha James.
It is not clear what link between the worms and Jane is. They do not appear to be telepathically linked in any way, as she didn't appear to be alerted when Martin crushed one - however, in her statement she refers to hearing their call as a "song".
The Siege of the Archives
Over the course of a few months, Jane Prentiss started to invade the passages beneath the Archives (MAG 41). On the 29th July 2016, Jonathan Sims accidentally discovered Prentiss' worms within the walls of the Archives (MAG 38). She actively engaged in a short siege of the Archives, where she was found destroying some of the paper cases (MAG 39).
Jane Prentiss was eventually destroyed when Elias Bouchard activated the CO2 suppression system, killing both her and the flesh worms that infest her. Her body is destroyed, via cremation (MAG 40 and MAG 55).