Inspector Loop visits America is the first in a series of books involving Inspector Ulnar Lewis Loop, the foremost authority in the Science of Fingerprints. The Inspector's quiet life as a retired fingerprint and crime scene specialist at New Scotland Yard comes to a sudden end as he is ordered by his government to go to the United States and study the Federal Bureau of Investigation's new fingerprint supercomputer located in West Virginia.

At his first stop in Washington, D. C.

while visiting with the Director of the FBI, his orders are changed and he is thrust into the mystery of several bank robberies that have happened in and around Boston, Massachusetts. During his trip to that city, he learns of a ruthless plot by unknown persons to end his life.

At his final destination of Smaller Wormwood, Massachusetts, he meets some very professional forensic specialists, who, with some assistance by the Inspector, come up with some very surprising methods in the processing of latent print evidence. The reader, through the words and eyes of the characters, will meet some interesting people, learn how fingerprint comparisons are really made, and other aspects of this forensic science.

It is all told with some tongue in cheek humor without the use of sex, foul language, or violence. .