Danny was born into the times where it was almost necessary to be a member of a gang. his older brother louie is a member of the notorious gang "tanglewood".
He was born as Daniel Messer. Danny grew up on Staten Island in an "Italian Mafia" family under surveillance (as hinted at in the episode "Tanglewood"), he formed his own set of hybrid ethics, caught between the world of lawbreakers and lawmakers. Mac personally selected Danny for his team, an honor and a responsibility that he attempts to live up to each day. His relationship with Mac is severely tested when Danny goes to Internal Affairs behind Mac's back ("On the Job") and almost loses his job, although he ends up being merely removed from the promotion grid and demoted to CSI second class.
He is a very suspicious person; though he gets along well with the rest of the CSI team, Flack is one of the few people he truly confides in. Danny attended college and played minor league baseball until he got into a bar fight and broke his wrist, after which he went to the police academy and graduated first in his class ("The Closer"). Almost a year after the original Tanglewood case, Danny is implicated in a 15 year-old cold case. His older brother Louie, a Tanglewood gang member, is severely beaten by the gang and left in a coma, although he manages to get a taped confession from the real killer which clears Danny of the charge with the help of Mac. Danny also has a budding friendship with crime lab newcomer Lindsay, whom he affectionately calls "Montana".
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Danny grew up on Staten Island, in an "Italian Mafia" family under surveillance (as hinted at in the episode "Tanglewood"). As a result, he formed his own set of hybrid ethics, caught between the world of lawbreakers and lawmakers. Though very little is known about the Messer family, Danny openly admits that he has had a very rocky relationship with his older brother, Louie, since a fateful night in 1991. After promising to take Danny to a party in Atlantic City with some of his friends, Louie pulled over beside a football stadium where he and two others began to severely beat a drug dealer, telling him it was an initiation into the Tanglewood Boys gang. When Danny protested, Louie called him a disgrace and told him to leave (episode 220, "Run Silent, Run Deep"). Despite the strained relationship that resulted, Danny would often lend money to Louie (episode 211, "Trapped"). After graduating first in his class at the NYPD police academy, (episode 122, "The Closer") CSI team leader Mac Taylor personally selected Danny for his team, an honor and a responsibility that he attempts to live up to each day.
At one time, Danny suffered from commitment problems and was scared of falling in love to the point of telling Mac to not even make jokes about it (episode 115, "Til Death Do We Part"). However, he has since shown signs of growing out of his commitment-phobic ways (i.e.; joking about marrying Lindsay Monroe after she displayed a knowedge of football (episode 219, "Supermen")).
Danny is apparently in his early 30's; Lindsay makes a remark referencing his 30th birthday (episode 208, "Bad Beat"). Danny attended college and played minor league baseball until he got into a fight and broke his wrist. He is a very good handball player, once using his skills to acquire evidence (episode 216, "Cool Hunter"). He suffers from claustrophobia, though he refuses to admit it, becoming nervous and irritable when in an enclosed space. (episode 105, "A Man a Mile", episode 211, "Trapped"). He frequently makes film references, which suggests he is a movie buff
Danny has displayed a tendency to follow his intuition when solving a case, rather than relying on the evidence, for which Mac has reprimanded him (episode 105, "A Man a Mile"). Danny is a very suspicious person; though he gets along well with the rest of the CSI team, Detective Don Flack is one of the few people he truly confides in.
Almost a year after a case that involved the Tanglewood Boys gang (episode 113, "Tanglewood"), Danny is implicated in a 15-year-old cold murder case. Louie is severely beaten by the gang and left in a coma after attempting to prove Danny's innocence. With Mac's help, Danny eventually clears his name, thanks to a taped confession from the real killer (episode 220, "Run Silent, Run Deep"). Louie's condition is still unknown, though it is widely presumed that he is still comatose.
Danny is particularly sensitive when it comes to suspects who act out on the loss of a loved one. In episode 304, "Hung Out To Dry," Danny tells murder suspect Shane Casey that he understands Shane's desire to clear his brother, Ian's, name, but does not agree with Shane's methods. Danny's words come back to haunt him later when, during the events of "Raising Shane" (episode 311), Shane tries to exploit Danny's sympathy for his situation, as well as Danny's concern for Louie, to get Danny at gunpoint to process the since-abandoned crime scene to obtain evidence that would find Ian innocence. To Shane's despair, the CSI brings evidence with him that proves Ian's guilt, and the police take Shane into custody without incident.
During "On The Job" (episode 121), Danny's relationship with Mac becomes strained when, during a critical case, Danny fires his weapon blindly, which supposedly leads to the death of a police officer. Ultimately, it is determined that someone else actually fired the fatal shot. Nevertheless, Danny is taken off the promotional grid after talking to Internal Affairs when specifically told to wait. The mistrust fades by the end of Season 2, when Mac talks to him outside the hospital after the events that leave Danny's brother Louie comatose (episode 220, "Run Silent, Run Deep"). Danny is annoyed when he discovers he is evidently the last to learn about the romantic relationship between Mac and medical examiner Peyton Driscoll, especially that "even Flack" knew about it before he did (episode 316, "Heart of Glass").
Danny takes it upon himself to trade shifts with Lindsay Monroe in episode 324, "Snow Day," taking her place to assist lab tech Adam Ross at a warehouse crime scene. When he arrives, he is taken hostage and held, along with Adam, by Irish mobsters who hope to use the situation to distract the NYPD while others of their clan break into the lab to retrieve a huge cocaine seizure from previously in the day. Danny is badly beaten during his captivity (taking a total of 4 blows to the head, one to the spine and having his left hand broken), but, with Adam's help, manages to take down their captors in time to be rescued by the officers gathered outside. He is able to walk out of the warehouse, leaning on Lindsay for support. |