Investigative excellence since 1969:

1969-1975 Detective Apprentice,

American Detective Agency, Pennsylvania - Founded 1975

Sentry Detective Agency, New Jersey - Founded 1976

American Detection Systems, Pennsylvania - Founded 1983

Lion Investigation Academy, Pennsylvania - Founded 1974

M&J Investigation, New York City - Founded 1980

Lehigh Valley Protective Services, Pennsylvania - Founded 1992

American Detective Agency, Nebraska - Founded 1995

American Detective Agency, Massachusetts – Founded 2000