Dark Shadows is a gothic soap opera that originally aired weekdays on 
the ABC television network, from June 27, 1966, to April 2, 1971. The
series depicted the lives of the Collins family of Collinsport, Maine.

The show became extremely popular when vampire Barnabas Collins,
played by Canadian actor Jonathan Frid, appeared a year into its run.

Dark Shadows featured an array of characters including ghosts, witches,
werewolves, zombies, and warlocks. Time travel and a parallel universe 
were also featured. Some characters were played by more than one actor.

The introduction of Vampire Barnabas Collins in 1967.

John Herbert "Jonathan" Frid
(December 2, 1924 – April 14, 2012)

Robert Louis Balfour Stevenson
(November 13, 1850 – December 3, 1894)

Scottish born author Robert Louis Stevenson wrote the classic adventure
novel Treasure Island, and the psychological thriller The Strange Case of
Dr. Jekyll and Mr. Hyde. He was a late reader, starting at about age seven
or eight, but he wrote incessantly as a child, even to the discouragement
of his father. He agreed to study law at Edinburgh University to appease
his father, but he continued to pursue a literary career during his young
adulthood.

 
Original  television run (CBS/NBC): October 2, 1955  – May 10, 1965

Alfred Hitchcock Presents is a anthology series hosted by Alfred Hitchcock. The
series featured dramas, thrillers, and mysteries. Time magazine named the show
one of "The 100 Best TV Shows of All-TIME". The Writers Guild of America ranked
it #79 on their list of the 101 Best Written TV Series.

 
Sir Alfred Joseph Hitchcock (13 August 1899 – 29 April 1980)

William Gargan, Lloyd Nolan, Lee Tracy, and Mark Stevens played the title role in 
Martin Kane, Private Eye on live television, airing on the NBC Television Network
from 1 September 1949 until 17 June 1954. The TV series, as with radio, was also
sponsored by United States Tobacco Company,

  
William Gargan                                          Lloyd Nolan

  
Mark Stevens                                            Lee Tracy

John Gavin (John Anthony Golenor)

Gavin played roles in the 1960 films, Psycho and Spartacus. He
co-starred with Doris Day in Midnight Lace. He was the first U.S.
Ambassador to Mexico (1981-1986) under President Ronald
Reagan.