* "N.Y.P.D. Confidential" (1977)
* "NYPD: Blue Bloods" (2001)
* "NYPD: New Blood" (2002)
* "NYPD: Heat & Greed" (2003)
* "NYPD: Bad to the Bone" (2004)
* "NYPD: Murder in Manhattan" (2005)
* "NYPD: The Five Boroughs" (2006)
* "NYPD: Dead City" (2007)
* "NYPD: Blood Brothers" (2008)
* "NYPD: East River Run" (2009)
* "NYPD: Blood on Ice" (2010)
* "NYPD: Hell Gate" (2011)
* "NYPD: Waterfront" (2012)
* "NYPD: City in Motion" (2013)
* "NYPD: Murder on the Hudson" (2014)
* "NYPD: The Big Blow" (2015)
* "NYPD: The Final Run" (2016)
Novellas:
* "The Irish Connection" (2007)
* "NYPD: Silent Night" (2008)
Short Stories:
* "Blue Christmas" (2002)
* "The Blue Light Special" (2003)
* "The Thin Blue Line" (2004)
* "The Christmas Cop" (2005)
* "The Night Before Christmas" (2006)
* "The First Noel" (2007)
* "O Come, All Ye Faithful" (2008)
* "The Joy of Christmas" (2009)
* "Silent Night, Holy Night" (2010)
* "The Twelve Days of Christmas" (2011)
* "The Gift of the Magi" (2012)
* "A Christmas Carol" (2013)
* "The Polar Express" (2014)
* "How the Grinch Stole Christmas!" (2015)
* "'Twas the Night Before Christmas" (2016)