
1) Activision game 2) Atari 2600-only game 3) Brit tabloid 4) British satirical magazine 5) Gumshoe 6) Mac OS game 7) Magnum was one 8) Mike Hammer or Sam Spade 9) Nicholson in Chinatown 10) Philip Marlowe or Sam Spade 11) Sam Spade was one 12) Self-employed detective 13) Sleuth for hire 14) Spade 15) Tec for hire
Found on
https://www.crosswordclues.com/clue/private-eye

Private Eye is a fortnightly British satirical and current affairs magazine, edited by Ian Hislop. Since its first publication in 1961, Private Eye has been a prominent critic and lampooner of public figures and entities that it deems guilty of any of the sins of incompetence, inefficiency, corruption, pomposity or self-importance and it has estab...
Found on
http://en.wikipedia.org/wiki/Private_Eye

British satirical magazine, published fortnightly. Begun in the 1960s, it often publishes news items considered too controversial or unsubstantiated by mainstream press, and many of its writers use...
Found on
http://www.encyclo.co.uk/local/20688

a private detective.
Found on
https://www.infoplease.com/dictionary/private-eye
No exact match found.