21 Beacon Street was an American detective television series that originally aired on NBC from July 2 to September 10, 1959.

Produced by Filmways

Filmways

Filmways, Inc. was a television and film production company founded by American film executive Martin Ransohoff in 1958...

, the summer replacement series consisted of 11 black-and-white

Black-and-white

Black-and-white, often abbreviated B/W or B&W, is a term referring to a number of monochrome forms in visual arts.Black-and-white as a description is also something of a misnomer, for in addition to black and white, most of these media included varying shades of gray...

 30-minute episodes starring Dennis Morgan

Dennis Morgan

Dennis Morgan was an American actor-singer. Born as Earl Stanley Morner, he used the acting pseudonym Richard Stanley before adopting his professional name....

 as private investigator Dennis Chase. Other cast members included Joanna Barnes

Joanna Barnes

Joanna Barnes is an American actress and writer.Barnes was born in Boston, Massachusetts, but moved to Los Angeles, California soon after finishing her education, and took up a contract with Columbia Pictures...

 as Lola, his aide; Brian Kelly

Brian Kelly (actor)

Brian Kelly was an American actor best known for his role as Porter Ricks, the widowed father of two sons on the NBC television series Flipper, and as Scott Ross in the ABC advernture series Straightaway, with co-star John Ashley.-Early years:Born in Detroit, Michigan, Kelly was the son of former...

 as Brian, a law school graduate; and James Maloney as Jim, a scientific and dialect specialist.

The title was the Boston

Boston

Boston is the capital of and largest city in Massachusetts, and is one of the oldest cities in the United States. The largest city in New England, Boston is regarded as the unofficial "Capital of New England" for its economic and cultural impact on the entire New England region. The city proper had...

 address of Chase, who would pass each case to the police after solving the crime.

The show aired on Thursdays at 9:30 p.m. Eastern Time, and was then carried by ABC-TV

American Broadcasting Company

The American Broadcasting Company is an American commercial broadcasting television network. Created in 1943 from the former NBC Blue radio network, ABC is owned by The Walt Disney Company and is part of Disney-ABC Television Group. Its first broadcast on television was in 1948...

 in reruns on Sundays at 10:30 p.m. from December 27, 1959 to March 20, 1960 as a replacement for Dick Clark's World of Talent

Dick Clark's World of Talent

Dick Clark's World of Talent is a talent/variety television show produced by Irving Mansfield and broadcast weekly in theUnited States on the ABC television network 10:30-11 pm on Sundays in the 1959–60 season.-History:...

. The producer was Al Simon.