The screenplay was certainly absorbing,but David Hemmings did not do a good job with it.It arguably has the seeds which spawn such later works as "fearless" (1994) and "unbreakable" ,but directing cannot pull it off properly,despite of its cast including Robert Powell whose strange looks were tailor-made for the part,Jenny Agutter who seems to be waiting for something to happen concerning her character,and Joseph Cotten whose end of career cannot compare favorably with Hitchcock and Welles works :here he is totally wasted .Interesting because of its connection with the later developments of the fantastic.
Review of The Survivor
