Note: Winner, 1990 Governor General's Award for English-language children's literature (Canada).

Synopsis: "The unkempt old house, an eyesore in a gentrified Canadian city neighborhood, reminds 15-year-old Cass of a half-remembered dream. Its cheap second-floor flat is such a godsend that he and his improvident single mother, Alison, don't mind their reclusive, possibly sinister landlord, Mr. Magnus, living on the floor below. While Alison plunges into her long-postponed thesis on William Blake, Cass unpacks and observes neighborhood bullies extort cash from young children and play nasty pranks on Mr. Magnus. When Cass takes a job as an usher in a run-down movie theatre, he endures abuse by the head usher. Meanwhile he ponders the significance of pictures left in his flat--a painting of a snake swallowing its tail, a photograph of young Mr. Magnus in World War I uniform--and of the dreams that haunt him, dreams of muddy trenches, of gunfire, gas, blood, pain, and fear. Curiosity and sympathy draw Cass and his new friend Maddy into the old man's obsession with alchemy, which gives the book its title." — quoted from a review of the book by Margaret A. Chang as published in The Library Journal that is reprinted on this book's product page on Amazon.com as of 2017-01-18.