I have read the odd Walker book, but the series which interests me the most is his 5 book Peter Macklin series. Macklin's a hit man. I wonder why I'm drawn to these books over his others?
The first 3 were published in quick succession in the mid-80's and then Macklin went into cold storage until the early 2000's.
Kill Zone is the first, Any Man's Death is the third. I believe I have the second and fourth also. What may surprise you is that I don't have the fifth, oh well might have to rectify that oversight.
The full Macklin series is:
Kill Zone (1984)
Roses Are Dead (1985)
Any Man's Death (1986)
Something Borrowed, Something Black (2002)
Little Black Dress (2005)
Peter Macklin, a consummate hit-man working for the Boniface crime family of Detroit, finds himself working for the FBI and the Secret Service to secure the release of several hundred hostages aboard a tour boat on Lake Erie.
Any Man's Death
Former Mob hitman Peter Macklin is back in a third adventure, in which Macklin must protect a controversial Detroit preacher with a contract on his head--and hope the hitman isn't his own teenaged son. Estleman holds a Western Writers of America Aces and Eights.