AllMovie

New York City is held in thrall by a serial killer known as Excalibur, who rapes and strangles unmarried women, then tosses them in the river--but not before marking their heads with a design resembling the sword of King Arthur. After several months' activity, Excalibur is back in business, and Kojak (Telly Savalas) is determined to put him away. But is it really Excalibur who has resumed the killing spree, or a demented copycat?