Dennis Lehane is a Boston-area author and well known writer of thriller novels, several of which have been adapted into film.

!!His works include:
* The ''Literature/KenzieAndGennaroSeries''
** ''A Drink Before the War'' (1994)
** ''Darkness, Take My Hand'' (1996)
** ''Sacred'' (1997)
** ''Literature/GoneBabyGone'' (1998) adapted into a film directed by Creator/BenAffleck in 2007.
** ''Prayers for Rain'' (1999)
** ''Moonlight Mile'' (2010)
* Other books
** ''Literature/MysticRiver'' (2001) adapted into a film directed by Creator/ClintEastwood in 2003.
** ''Literature/ShutterIsland'' (2003) adapted into a film directed by Creator/MartinScorsese in 2010.
** ''Coronado: Stories'' (2006)
** ''Literature/TheGivenDay'' (2008)
** ''Live By Night'' (2012)
** ''The Drop'' (2014)
* Television
** ''Series/TheWire''. Writer of three episodes and a CreatorCameo.
** ''Series/{{Castle}}'', where he appears AsHimself several times.
** ''Series/BoardwalkEmpire'' as a creative consultant starting in season 4.

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!Tropes present in many of his works

* BadassNormal: He intentionally makes his protagonists normal people:
-->I decided, I do not want the people [in my books] to be veterans of any war I don't want them to know some sort of obscure Eastern kung fu philosophy that'll help them whoop ass. I want them to be regular, vulnerable people. They're not braver than most people, but they stick with it.
* BittersweetEnding or DownerEnding: His books rarely end on completely positive notes, if there's anything positive to begin with.
* BlackAndGreyMorality: There are several villains who have sympathetic motivations, and the "good" people are rarely completely clean themselves.
* BlackComedy: Present in many of his stories, which he relates to his Irish heritage.
* {{UsefulNotes/Boston}}: Where the majority of his stories are set. He also cites [[{{Spenser}} Robert B. Parker]] and Andre Dubus as major influences on his style.
* CowboyBebopAtHisComputer: He's been mistakenly referred to as the author of several different Boston-based stories, including ''TheDeparted'' and ''TheTown'', by both the media and people who actually live in Boston.
* HurtingHero: Most of his protagonists. He even admits that he's not sure how much Patrick Kenzie is capable of dealing with.
* IJustWriteTheThing: He explains the 11 year gap between ''Prayers for Rain'' and ''Moonlight Mile'' as being because Patrick Kenzie wouldn't talk to him.
* NotQuiteTheRightThing: A running theme in many of his stories is that it's not so obvious what the "right" thing is, if it even exists.
* RealityIsUnrealistic: Some aspects of his books are criticized for being unrealistic, but nine times of ten he's based it on something that really happened.
* SlidingScaleOfIdealismVersusCynicism: ''Heavy'' on the cynical side, but not completely dark.
* {{Tuckerization}}: Several characters are based on real people.
* WhamLine: His stories often have at least one, which he explains as being the result of his love of the dramatic.
* WriteWhoYouKnow: He advocates this, but also says that people need to focus more on the overall human experience than specific events.