There are 3 books in the New York Trilogy series. The newest book is The Locked Room which came out in 1986.

2
Ghosts

Book cover of Ghosts
A fiction writer compiles his essays and interviews with such literary greats as Franz Kafka, Samuel Beckett, Paul Celan, and more in a book that calls attention to the dangerous stakes of writing and undermines accepted notions about literature.

3
The Locked Room

Book cover of The Locked Room
When Fanshawe disappears, his wife, Sophie, contacts the narrator in hopes that he, one of Fanshawe's childhood friends, can solve the mystery