Arthur Ranshoff is shocked and grief-stricken after witnessing the murders of his sister and niece, who were visiting from out of town, and a group of liberal churchmen in a New York City restaurant. The churchmen, leaders of a controversial, ultra-liberal sect that preaches love and tolerance, had planned to construct a church taller than any other building to proclaim their ideals. But someone is determined to stop their dream from becoming reality.
The police and other witnesses believe a single gunman acted alone. But Arthur, a fifty-five year old proofreader and so far unsuccessful actor, has another theory. With the help of a private investigator friend, he sets out to prove who is really responsible for the murders.
Arthur's investigation takes him all through the city and brings him to a deadly confrontation with the forces opposed to building the church.