The New York Trilogy by Paul Auster
"Three stories on the nature of identity. In the first a detective writer is drawn into a curious and baffling investigation, in the second a man is set up in an apartment to spy on someone, and the third concernsthe disappearance of a man whose childhood friend is left as his literary executor. "
Faber and Faber
"The New York Trilogy was originally published in the USA as City of Glass (1985), Ghosts (1986) and The Locked Room (1986)."