Worldlines: A 'Many Worlds' Novel

When Gary Jackson a bright academic student suffers life changing injuries in a road traffic accident his world begins to unravel. Having taught himself to lucid dream he now spends considerable time in bed living out fantasies in his own mind that he could never experience in the waking world. However when a relative with dementia claims to have witnessed a murder he committed in a dream Gary starts to question the nature of reality and wonders if his actions in the dream world have real life consequences.Meanwhile in another place Physics student Gary Jackson finds himself in prison for a murder he has no memory of committing. Can the dreamer help the student get acquitted for a murder everyone saw him commit? Or will Gary spend his life in prison for someone elses crime?