The Contortionist's Handbook

Born with an extra ring finger on one hand and a gifted proclivity for math, John Dolan Vincent suffered childhood ridicule and a difficult home life. Now his adult life is spiraling downward as he struggles with untreatable migraines, drugs, and the criminal forgery activities he engages in to survive. His clients in the Los Angeles underworld lose patience, he's at risk of being institutionalized as a suicidal addict, and the only person in as much danger as himself is the woman who knows his real name.