Headed up by ex-Scotland Yard Detective, James O'Brien, A to Z Investigators is one of Ireland's most reputable and successful private detective agencies. With 35 years experience working on all types of cases, James and his highly-trained team are best equipped to handle all your investigation needs.
I found Mark to be impeccably courteous, helpful and extra-patient on the phone and in person as he took me through any doubts I had. His team delivered an excellent web site and I'm seeing results already.
James O'Brien, MD and first time web site owner