Scotland Yard is chasing the frog with the mask, the leader of a criminal organization that holds the whole of London in his grasp. Nobody ever saw the frog. One tracks him down - but he has to pay for it.
This book is part of the "Detective Sgt. (Insp.) Elk" series. Here are some other books from this series:
Scotland Yard is chasing the frog with the mask, the leader of a criminal organization that holds the whole of London in his grasp. Nobody ever saw the frog. One tracks him down - but he has to pay for it.
