The Voice on the Wire

This book has an Interesting early mystery and nice use of technology. The Captain leaned over the table, his face tense with suppressed emotion. He was a grizzled veteran of the New York police force: a man who sought his quarry with the ferocity of a bull-dog, when the line of search was definitely assured. Lacking imagination and the subtler senses of criminology, Captain Cronin had built up a reputation for success and honesty in every assignment by bravery, persistence, and as in this case, the ability to cover his own deductive weakness by employing the brains of others.