Rachel performs a psychiatric evaluation on Raymond Corvus as Derek is convinced he is responsible for a series of murders identical to those he was tried and found guilty of committing. As Rachel struggles with the results of her evaluation and the knowledge it will put a man to death the team continues to research who is behind the newest 'harvester' type murders...

Corvus was put to death but the murders continue...Alex forms an alliance with one of the victim's fiance and vows they will find her killer. Derek and Nick trail a reporter on a scoop to find the killer and a close encounter with an early demise of her own...as Rachel becomes to object of the Harvester's obsession. The team must come together with all their new found information and find were this new killer keeps his layer in order to stop him before they lose one of their own to his monsterosities.

A young man is mysteriously killed while at a well known local spot, a place where a woman was lynched in the 50's. His skull is crushed, but not his head, and his body is covered with what looks like electrical burns. The coroner is an old aquaintence of Dereks and he asks if Derek will come and help. He takes Kristin with him and they find a small town with a deep, dark secret.

A patient of Rachel's mysteriously vanishes after their last session and bequeaths her a beautiful but odd painting. After learning more about the young woman's disappearance and the history behind the painting itself the team becomes convinced it must be destroyed. Kat's new friend decides to teach Kat the art of the craft and Kat learns new secrets about herself in the process but puts an old friend's life in danger.

Alex's grandmother travels to San Francisco to warn her of an evil spirit/Bocor thatis after her. She gives Alex a magic charm to protect her but falls pray to the Bocor's voodoo powers herself. With her grandmother now in a coma Alex does the only thing she can think of to help her... she releases Daniel Euwara, a powerful spirit, from the prison the Legacy trapped him in (see 'Spirit Thief')and asks him to remove the curse.

Alex returns after an unexpected sabbatical as the team turns on Derek when an old case is re-opened. The twenty year old evidence begins pointing towards Derek as a cold blooded killer and old witnesses can no longer rely on their own accounts to save him. As he stands firm in his innocence those closest to him, except for one, lose all confidence in their friend, mentor and Precept.

Franklin Cross begins his takeover of the San Francisco house of the Legacy. The team are not sure what is going on, where Derek is or whether or not to trust Cross. The investigations into Reed Horton continue while the team try to find out what has happened to Derek themselves.

Nick's brother, Jeremy, who died and was cremated, appears on the road in front of Nicks car. He claims to have 'escaped' and has The Soul Chaser after him trying to take him back. After a brief altercation with The Soul Chaser Nick takes the wounded Jimmy back to the Legacy HQ with him, believing the Soul Chaser to have been killed by his own weapon. The Soul Chaser returns to our world though and tracks down the brothers. He launches an attack on the Legacy house to finally retrieve his quarry.

Kat is doing magic with her friend Miranda, who has shown her a few small tricks and has taken her to her secret place. Miranda tells Kat that if she touches the amulet she has given her to the heart of three other poeple then the five points of power will increase her magical prowess. Rachel, Nick and Alex are her three targets but they know something is going on. Can they find out what Miranda is up to before it is to late to save Kat?

A mysterious bottle is found by Milos Javitz in an old curio shop. he thinks that it could be an item that he has been searching for for years, a bottle containing Ginelle, a female genie. Before he can complete his three wishes after releasing her he is tricked into closing his eyes. She knocks him out and escapes to gain revenge on her past 'owners' who refused to release her from her cptivity. To help him find her, and to save himself from her anger, Milos calls on his old college roomate... Derek Rayne.

Alex wrestles with the guilt and grief of losing her Grandmother as Rose's spirit urges her to save another from the same fate. The spirit of a young boy drowned years prior has returned to seek revenge on another and Alex must help convince the boy to resist vengeance and move on.

Excavations in boston discover what loks like a tomb buried deep underground. The digging has made an opening and when the builders examine it they release Dr. Mordecai Church from his long imprisonment. He kills them and sets about starting his own 'religion', recruiting young runaways as his congregation. Having no family makes leaves Church free to kill his new disciples whenever he wishes, after all who is there to complain when no one knows where they are anyway? Reed Horton soon comes across Church and recruits him for his own vendetta against The Legacy.

Horton's plans to split The Legacy apart and destroy Derek begins to work as Kristin walks out and with Mordecai Church at his side he has a powerful ally to help him finish of the rest of the team. With the Boston chapter of The Legacy being almost non-existant now it is left to Derek and Nick to find out what the evil duo are up to and stop them. They try to persuade Father Callaghan, who has been helping them out, to rejoin their fight against Horton and Church and to save The Legacy from destruction.

A couple of fisherman catch something big and heavy on their anchor. Unknowingly they have released Karen Morgan, a succubus who is in love with Nick. She uses another name and disguises herself to 'fall in love' with Nicks friend and then starts to visit Rachel at her Doctor's office. She uses both of them to make sure that she gets introduced to Nick. Meanwhile, to keep herself alive, she is finding violent men on the streets of San Francisco and sucking the life from them.

Derek's lover (Megan) is murdered in a car bombing and he and Alex pursue the killer, only to be drawn into a horrifying web of Horton's making that pits Derek and Alex against each other ? Can Derek bring himself to kill Alex or can he defeat Horton once and for all ?

Rachel recieves a blast from the bast. While watching an old home-video Kat notices a little girl in the video that had never been there before. It turns out the little girl is named Paige, Rachels child she gave up when she was 19. Paige died some years later and is now out for revenge on Rachel, who she blames Rachel for not being there to save her. Can Nick prevent Paige from hurting Kat ? Can Rachel re-connect with Kat after this discovery, that Kat has a sister ?

We begin with a priest, who has sent a young lad on a mission to find out information about the Legacy House. The young lad returns with news that a gate way to hell is buried under the Legacy House. The Priest then kills the lad, as he now has what he was after. The priest sets out to be-friend Alex and Rachel (Nick and Derek are not present in this episode). He makes his way into the House where he tells them that the Gateway must be sealed, if it is not, he tells them, Rachels daughter Kat will be killed as she has been struck down with a mysterious virus. As Alex and the Preist make their way underground, the Priest attacks Alex and proceeds to make his way to find the gate and open it. Upstairs, Rachel sees Kristen, who is now an angel, who has been sent to try to stop the opening of the gate. She instructs Rachel to go and stop the priest and to have faith, no matter what. As Rachel finds Alex, they both proceed to the gate, the Priest is about to open it when he notices Rache

A patient of Rachels with a tragic past and with a life threatening asthmatic condition inherits her family mansion and becomes the target for seemingly vengeful ghosts, demons and spirits.

Kat faces mortal danger when she resumes her friendship with an ailing Miranda. To save Kat, Rachel must find powers from the past,a past she would prefer to forget. For this episode, we learn that Miranda wants to transform herself into Kat - to inhabit Kats body. To live in Kats body. After the opening credits, Kat and Rachel have an argument and Derek tries to persuade Kat to give up magic - she disobeys, obviously. After a ritual between Miranda and Kat, Miranda tricks Kat and Miranda transfers her soul into Kats body - but before she does, Miranda reveals her true self - an elderly, dying old women who has been searching for the perfect body to transfer into. Miranda is now in control of Kat. As suspicion rises about the true identity of Kat, Alex realises that Miranda and Kat now share the the same body. In order to defeat Miranda inside Kat, Rachel volunteers to be concercrated (so that she can become a witch) As Alex and Rachel discover that the witch spell hasn't worked,

Alex struggles to cure Nick, and has to keep him alive, after he is infected by a Denomic parasite which makes him see evil all around him. The episode begins with Alex working in the control room when Nick bursts in through the front door. He chases after Alex, trying to kill her. She manages to find a torch and smashes it off his head and knocks him out. She ties him to his bed. He wakes up and threatens to kill her, constantly shouting and screeming that he is going to kill Alex and shouting that he can see evil all around him. We learn that he has been infected by a demon who causes him to hallucinate. This leads Nick to remember events from the last year (evil events), in which he was hurt or people around him were hurt. As Nick remembers the past events, Alex researches the Legacy database and she realises that Nick has the Mephisto Strain. With the hepl of the Database, Alex finda a cure, which heals Nick.

An ancient deck of tarot cards enlivens a tedious evening for Derek, Nick and Alex. However, each card underscores the high personal cost of their allegience to the Legacy. This episode, like the one previous, is in a clip based format. Nick, Derek and Alex all sit around a table in the Legacy House remembering key moments and events from the past 4 years.

The series finale comes with an explosive end. The team has battled many enemies in the field in the past four years but the final battle is one fought in their own home. While Kristin's sacrafice held off the seal to hell from being temporarily opened it will take another to seal it completely... the question is can the Legacy team go on after losing their home and perhaps friend?