This oddball movie has an interesting plot: a psychopath commits murders between appointments to see his psychiatrist, taunting police with phone calls before each murder. Williams (best known for his 1950s sci-fi roles) is quite good as the killer, and Knight does her usual good acting job as the psychiatrist's assistant and the love interest. This film captures the mood of the early 1960s quite well but is nearly defeated by the harshest, most shadowy use of set lighting I've ever seen. Interesting conclusion takes place in a hospital, with--naturally--bright blinking lights. With better cinematography, this movie could have been a minor classic. Still worth catching for Williams' performance and the football game sequence.