Although his hatred of Angel builds with the loss of his hand he soon gets a new, albeit plastic, one and, knowing the firm want Angel dark not dust, goes along with their plans. But falling in love with the firm's secret weapon, the newly resurrected (and now human) Darla, doesn't help things along. Especially when it's Angel that Darla turns to when she finds that she is dying. But Lindsey gets his revenge when he brings in Drusilla to revamp Darla right in front of Angel's helpless eyes.

Whilst away Lindsey studies the Senior Partners and to find a way to get revenge on them and Angel. He hooks up and falls in love with Eve, a liaison to the Senior Partners. Covering his body in protective tattoo's which will hide him from the Senior Partner's, he returns to LA to take his revenge. Having retrieVed the amulet Wolfram & Hart gave to Angel to help Buffy defeat The First, he sends it to Angel (who has now become CEO of Wolfram & Hart - it's a whole other story). at his new office. On opening the package, the wearer of the amulet, Spike returns as a ghost. Another little package from Lindsey and Spike becomes corporeal again. His plan coming together, he sets about convincing both Spike and Angel, that Spike is the real champion and the one who will fulfill the Shanshu Prophecy. His plans are foiled, however, when Cordelia makes a spiritual visitation to Angel and helps to set things right once more. Lindsey puts up a good fight but this time Angel, & co have Wolfram & Hart and the Senior Parnters on their side, and Lindsey is defeated. His punishment is to be sent to a holding dimension where he must have his heart cut out on a daily basis until they are ready to deal with him.

Needing to find out more about the Senior Partner's plans, Angel busts Lindsey out of his prison and, once he has the information he needs, he dupes Lindsey into helping him defeat the Senior Partner's once and for all. To Lindsey's great disgust it is Lorne and not Angel who has the pleasure of finally putting an end to him.

They have a brief reconciliation before she discovers that he is working in the seedy underworld, traficcing demon drugs to boost his pension. When Angel is unable to prevent her father from being murdered by the vampire's he is working for, she blames Angel for her father's death.

Having been introduced to the demon underworld of LA, Kate becomes obsessed with it, turning up at any supernatural looking job and gains the reputation of a bit of a 'Scully', no matter how many times she explains that 'Scully was the sceptic'.

Gradually she begins to regain her trust in Angel and even helps him out a couple of times. When she has to arrest him for breaking into the Wolfram & Hart building, she lets him go believing that he is the only one who can stop Darla and Drusilla on their rampage. As Angel not only does not stop them, but refuses to save the Wolfram & Hart lawyers from their massacre, Kate loses her job.

Having lost everything of value, Kate hits the bottle and the pills and, leaving Angel a message on his ansaphone, she prepares to die. Luckily for her, Angel comes to his senses in time to save her. Believing that his being able to get into her apartment without an invitation is divine intervention, Kate has an epiphany of her own and heads off to start a new life.

Left to himself, Penn makes his way through the centuries reliving the times he shared with Angelus, often returning to the same places to commit his identical crimes.

On a return visit to LA, Penn runs into his old mentor again but finds him changed, after a vicious fight Penn winds up on the receiving end of a piece of 2 by 4, courtesy of detective Kate Lockley.

Angel soon comes across Jhiera and at first they fight, Jhiera believing that Angel is helping the male Oden Tal demons. But there is a spark between them and Angel agrees to help Jhiera beat the men and find a safe place for the women to stay.

For 150 years the two roam Europe causing death and mayhem everywhere causing her beloved Angelus to earn the name, The Scourge of Europe. They find themselves in London in 1860 and Angelus becomes smitten with a young girl who has the gift of the sight. He sires her and the three become a family until Drusilla finds a mate of her own in Spike.

1898 finds the four in Romany and one fateful night Darla brings home a present for Angelus in the form of a gypsy girl. Though tasty, the gypsy is very much beloved by her clan who put a curse on Angelus giving him back his soul. With a soul, Angelus is repulsive to Darla and she throws him out into the street. She loves him still though, and visits the gypsy clan to try and persuade them to reverse the spell, unfortunately, Spike feeds on the rest of the clan and renders her bargaining points useless.

Seeking excitement, the three of them head to China for the Boxer Rebellion in 1900 and here Angelus tracks her down and asks to be taken back with promises that they can return to their old life. She takes him back but soon finds that Angelus will only drink from the evil doer and, when he refuses to drink for a baby, she once again kicks him out.

Leaving Spike and Dru, Darla returns to The Master, who during the 1930's becomes trapped in a sunken church in Sunnydale, California. In 1997 she helps The Master in his attempts to free himself from the church but their efforts are foiled by the Slayer. Learning that Angelus is in town, now calling himself Angel and dating the Slayer no less, she hatches a plot to bring him back to her and kill the Slayer at the same time. Posing as one of Buffy's friends, she goes to her house and attacks her mother, making sure that it appears Angel is the one who has bitten Joyce. Her attempts to bring Angel back to her are in vain, and when she tries to kill Buffy, Angel stakes her.

Three years after her death, LA law firm Wolfram and Hart perform a ritual to bring Darla back in human form. Their purpose in bringing her back is to torment Angel, who is now living in LA and has got on their bad side. Darla visits Angel while he is sleeping and disturbs his dreams with the aid of a potion. When Angel's lack of sleep has made him just cranky enough, they move onto phase two and let Angel see Darla in public. Still very much in love with her boy, Darla has her own plans and still tries to woo Angel back to her.

Unfortunately, being human again has brought back her old human condition of syphilis which is too far gone to cure. After spending 400 years as a disease free vampire, Darla hates her human form and turns to Angel to beg him to make her a vampire again. When he refuses, she tries her luck in a seedy demon bar, but Angel has other ideas and undertakes a series of trials in order for Darla to be cured. Having watched what he goes through, albeit in vain, to save her life, Darla decides to accept her fate. Before death takes her though, Wolfram & Hart find Drusilla who sires her once more.

Reunited again, the pair have fun pillaging LA and massacre many of the Wolfram & Hart staff before Angel catches up with them and sets them both on fire. The two survive the ordeal and go into hiding for a time. Meanwhile, his efforts save Darla in vain, Angel finally goes to the dark place Wolfram & Hart wanted him to be, and, not caring for his soul, he finds Darla and the two have passionate sex, three times. To Darla's dismay, rather than losing his soul Angel has an epiphany and, warning her he will kill her if he sees her again, returns to his friends.

Their night of passion wasn't to be forgotten, however, and Darla conceives an impossible child. Despite her efforts to be rid of the child, nothing earthly or otherwise will kill him. Nine months later, she returns to LA, largely pregnant. But the child that could never be has a soul, which for a time, infects Darla who begins to have intense maternal feelings for the child. Unable to give birth and knowing that, once she no longer carries the child she will no longer have a soul in her, Darla stakes herself to save her child. Still caring for her child, she returns just once more in ghost form to try and save him from taking an innocent life.

Working alongside Lindsey McDonald, she first tries to get Angel on side, when that doesn't work, she brings in rogue vampire slayer, Faith to kill him, and when even that doesn't work she helps bring back Darla to torture Angel and turn him dark. Although she has a deep hatred of Angel, and would have him killed given the chance, she also finds herself attracted to him (and who wouldn't). She and Lindsey share a very unhealthy rivalry and, when they find themselves the only survivors of Darla and Dru's massacre she is both pleased and pained that they get to share the role of acting head of Special Projects. Fortunately for Lilah, Lindsey decides to leave, but she soon finds she has another rival in the shape of Gavin Park.

When Wesley is abandoned by all of his friends, Lilah finds this the appropriate time to step in and try and lure him to the dark side. Although she fails in this, she does find herself in a relationship with him that will come to mean more to both of them then they are likely to admit.

Lilah gets her final triumph over Gavin when she finds that the Senior Partners have little confidence in her immediate boss, Linwood Morrow, and, once she has decapitated him, she finds herself filling his shoes quite nicely.

Her relationship with Wes, however, isn't going as well as her career, as he, finding himself back in the company of friends, ends their relationship. Things goes from bad to worse when The Beast destroys the L.A. branch of Wolfram & Hart. She turns to Wesley for help and gets herself killed by Cordelia who has been taken over by a higher power. To add insult to injury she is then beheaded by Wesley who believes she has been murdered by the escaped Angelus.

Her contract with Wolfram & Hart, however, extends beyond death, and she gets to return to in spirit form to offer Angel Investigations full control of the fully refurbished L.A branch of Wolfram & Hart.