When published in 1973, this was the first book to present and analyze the results of scientifically controlled experiments in extrasensory perception during the dream state. This updated, revised and expanded edition now represents the most current and authoritative source of information available. The main body presents experiments by the authors over a ten year period to determine if persons acting as "agents" could transfer their thoughts to the minds of sleeping "subjects" and influence their dreams. Subjects' reactions, transcripts of recollected dreams and their associations with "targets," accounts of particularly unusual telepathic communication between participants, descriptions of the experimental procedures, and a summary of statistical results are recorded. Their findings, written in straightforward language, will interest the general reader and serious scholar alike.