Nick Carter is a house pseudonym used by Award, Ace, and later Jove, publishing for the series Nick Carter who later graduated to a special agent for the Killmaster novels, a series of 261+ spy adventures published from 1964 until late 1990s.
A great number of writers have written under the pen-name over the years, beginning in September 1886 when Nick Carter first appeared in the 'New York Weekly' in a 13-week serial, entitled 'The Old Detective's Pupil; or, The Mysterious Crime of Madison Square'.
The Nick Carter character was originally conceived by Ormond G. Smith, the son of one of the founders of Street & Smith, and realized by John R. Coryell.