Currently available on 3 streaming services.

Streaming, rent, or buy The Man from U.N.C.L.E. – Season 4:

You are able to buy "The Man from U.N.C.L.E. - Season 4" on Amazon Video, Fandango At Home, Apple TV as download.

Cast

Robert Vaughn
Napoleon Solo
David McCallum
Illya Kuryakin
Leo G. Carroll
Alexander Waverly