Dexter and Trinity face off in the final episode of season four. Everything is at stake for Dexter – from his reputation, to his secret, to his family – since Arthur Mitchell has discovered who he truly is: Dexter Morgan, family man, blood spatter analyst, brother, husband, and father. Once Miami Metro discovers that “Trinity framed Stan Beaudry,” the FBI comes in to take down Trinity, who appears to have “skipped town.” Even when Dexter believes he has triumphed, for he is different than Trinity, he has actually failed. R.I.P. Rita Bennett Morgan, survived by Astor and Cody Bennett and Dexter and Harrison Morgan, the duo “born in blood.” What could this mean for little Harrison? Have Harry’s sins come full-circle to Dexter damaging Harrison the way his father “damaged” him?
Dexter becomes further involved with Arthur Mitchell’s family and lets Jonah know that he’s tracking them down; whereas Jonah suspects Arthur’s (and Kyle Butler’s) demons, others don’t. Deb suspects Christine Hill of shooting Frank Lundy. Her exchanges with Hill only serve to accentuate that the two of them are no different; they act just as their fathers have in order to gain approval, attention, and acceptance. Dexter juggles far too many things, as he seems to do this season, and that leads to Trinity following him right into the heart of Miami Metro.
Dexter suffers after the revelation that he killed an innocent man (Jonathan Farrow) after lacking sufficient evidence to support his guilt; Quinn becomes suspicious of Dexter. Debra, after being thrown off of the Trinity case for she was officially a “victim” of Trinity, starts back-seat driving the investigation through Quinn; later, after Masuka and Deb figure out that the shooter was too short to be Trinity himself, Deb is put back on the case. Dexter accompanies Arthur Mitchell to Tampa on a build (or attending a Weather Conference, as he tells everyone); he admits to Trinity that he killed an innocent man, leading to the revelation that Trinity also was responsible for the death of an innocent person. Rita accidentally kisses Elliot next door. Dexter spends Thanksgiving with the Mitchells. Ultimately, we discover that Christine Hill is Trinity’s daughter( gasp!).
Dexter’s fascination with Arthur Mitchell, or Trinity, grows as he witnesses just how wonderfully camouflaged he is. Debra is back from her sick leave and is determined to take down Trinity to avenge Frank Lundy, which could possibly make her a target. Dexter puts off taking down Trinity, for he wants to learn from him; in the meantime, he focuses his killing energies on Jonathan Farrow, bloody photographer and woman-abuser, only to discover later that Miami Metro has uncovered solid DNA evidence that supports Farrow’s assistant being the true killer. What does this mean for Dexter Morgan? We shall see.
As Frank Lundy closes in on this thirty-year hunt for the Trinity killer, the ghost-like man manages to escape by the skin of his teeth. The hunt for the great serial killer excites Deb, and so she follows along until their stalking turns deadly. Despite the fact that Lundy believed Trinity was a lone wolf (and Dexter’s projection of Harry believes so as well), we discover that Trinity is, indeed, a family man. Does this mean that Dexter can have it all?
According to Harry Morgan, Dexter is “spinning too many plates,” but that doesn’t stop our favorite serial killer. Despite Harry’s warning, Dexter goes on to kill Beni Gomez just to fall asleep at the wheel in the middle of the disposal and forget whether or not it was taken care of. The back story of the Trinity killer has begun to develop, involving some serious Freudian implications regarding Trinity’s mother and father. Now retired Special Agent Frank Lundy is busy putting together one of the biggest cases in American history, with Dexter’s help of course. Settling into suburbia, Dexter is pinpointed by the “neighborhood terror,” who Dexter scares to a stop. Can Dexter handle all there is to handle?
Dexter is settling into family life – and rather groggily at that – following his marriage to Rita and her children and the birth of their bouncing baby boy, Harrison. It seems as though he is “living the [American] Dream;” however, he just can’t seem to figure out how to balance his serial-killing hobby, married life, and a baby. A new, untraceable serial killer is at large in Miami and Frank Lundy has come back to town to track down this killer once and for all. The Trinity Killer, portrayed by the immensely talented John Lithgow, is chilling from the start. We know Dexter will have to go after him; it is just a matter of how. Debra continues her search for her father, Harry Morgan’s, mistress-and-C.I. and begins interviews with the women that Francis in clerical can dig up at Miami Metro. The world is off-kilter; can Dexter Morgan handle all the challenges of married life, fatherhood, and his nighttime hobby as the Dark Defender? We shall see. Serial killers (both in the series and in the real world) are discussed, as is the ever-present Freudian undertones.