arthur langtry agreed to reread all the material , but pressing matters kept him from ever doing it , though he was responsible for increasing the number of investigators in new orleans from three professional private eyes to four and of discovering another excellent contact - a man named irwin dandrich , the penniless son of a fabulously rich family , who moved in the highest circles while selling information secretly to anyone who wanted it including detectives , divorce lawyers , insurance investigators , and even scandal sheets .