Michael Crew was the childhood friend of Dominic Swain who was struck by lightning, creating a Lichtenberg figure pattern on his body.
In 1996, a book titled The Boneturner's Tale, apparently from the library of Jurgen Leitner, appeared in Chiswick Library. It was returned, along with four other books, by a man named Michael Crew.
From late 1997 to early 1998, Michael Crew frequented Lions Street Books, and eventually bought Ex Altiora, using it in a ritual to protect himself from a creature that was pursuing him.
In 2005, he walks by Stephen and Grant Walker's house, watching their attempts to enter through a window via a ladder.
In 2006 he encounters Stephen and Grant again, on top of the Tour Montparnasse, where Grant disappears along with Crew.
In late 2012, the Jurgen Leitner-owned book Ex Altiora later showed Swain a Lichtenberg figure, setting him at ill at ease.
In 2017, Jonathan Sims is given Crew's contact details by Jude Perry (MAG 89). After Sims confronts him and takes his statement, Crew is knocked out (then killed and buried) by Alice Tonner (MAG 91).