21 Beacon Street poster

21 Beacon Street (1959)

Drama

21 Beacon Street was an American detective television series that originally aired on NBC from July 2 to September 10, 1959. Produced by Filmways, the summer replacement series consisted of 11 black-and-white 30-minute episodes starring Dennis Morgan as private investigator Dennis Chase. Other cast members included Joanna Barnes as Lola, his aide; Brian Kelly as Brian, a law school graduate; and James Maloney as Jim, a scientific and dialect specialist. The title was the Boston 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 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. The producer was Al Simon.

IMDb rating
7.9 (62 votes)
Episode average
7.2 -0.7 vs IMDb
Seasons
1
Language
EN
Type
TV series

Rating trend: this show's seasons do not settle into one shape. Rising Shows ranks whole shows by the shape of their rating trend rather than one average score, which is how you find a show that got better rather than a show that started well.

Ratings refreshed Oct 3, 2026 · 1 season indexed

Cast

Seasons

Season 1 (1959)

7.20 avg 8 episodes 7.6 → 6.6 27 min avg

Ep 1: 7.6 · 11 votesEp 2: 7.0 · 7 votesEp 4: 7.4 · 7 votesEp 5: 7.4 · 7 votesEp 6: 7.2 · 7 votesEp 7: 7.2 · 7 votesEp 11: 7.2 · 8 votesEp 12: 6.6 · 9 votes
Season 1 episodes - IMDb ratings
#TitleRatingVotes
1The Rub Out7.611
2Safety Deposit7.07
4Double Vision7.47
5The Swindle7.47
6The Execution7.27
7Break In7.27
11Dilemma7.28
12Nothing is Impossible6.69