The Uwaysis--who take their name from Uways, a contemporary of the prophet Mohammad who is reputed to have communicated with him telepathically--are Muslim mystics who look for instruction to the spirit of the dead or physically absent person. Julian Baldick here surveys the legend of Uways and the Uwaysi phenomenon within Sufism, Islam's main mystical tradition. Baldick examines the Uwaysi movement in 16th-century East Turkistan (now Xinjiang in...