The Honeymoon's Over 3.01
Prue and Phoebe come to Darryl's rescue just before he is about to be murdered by a mortal protected by a supernatural entity known as a Guardian. Although they manage to vanquish the Guardian, the girls have to lie to Cole Turner, an assistant district attorney, in order to keep the family secret, which sets the mortal killer free. Meanwhile, Piper worries her sisters because she has been away with Leo in the realms of the white lighters for a month with no word, leaving her sisters to worry what's happen to her.

Magic Hour 3.02
Piper learns from Leo that they have about twenty-four hours to secretly marry before his superiors come down on them. After finding a ritual that may be the answer, Prue supports using it while Phoebe believes performing the ritual may be selfish and have future consequences. As the Halliwells seek an answer to Piper's problem, they encounter a young couple, Christopher and Brooke, that have been cursed by a jealous warlock that wants Brooke's love for himself. The Charmed Ones find that Christopher is cursed to be an owl during the day and Brooke to be an wolf during the night.

Once Upon A Time 3.03
Phoebe comes across a young girl, Kate, that is being terrorized by trolls because she is protecting a fairy they seek to harm. Although Prue and Phoebe believe the young girl needs the help of the Charmed Ones, Piper goes on strike from helping innocents until the 'Powers That Be' allow her and Leo to be together again. While Prue and Phoebe try to save Kate and the fairy from the trolls, Cole attempts to gain access to the Halliwell Manor to get the Book of Shadows.

All Halliwells' Eve 3.04
As the sisters get ready to celebrate Halloween, the Grimlocks return from the dead to seek revenge on the Halliwells. As the Grimlocks start to attack, the girls are sent through a time vortex that lands them in Virginia during 1670, leaving Leo and Darryl to fight off the Grimlocks until the Halliwells return. In the past, the sisters learn that a good coven of witches summoned them to help rescue a young woman that is due to give birth to a magical child. But the mother is being held in the home of an evil witch that Cole travels to the past to help.

Sight Unseen 3.05
Piper and Phoebe are worried that Prue has become too obsessed with the evil triad since returning from the past and learning that someone was sent back to destroy their family line. So when Prue comes home to discover someone has broken into the Manor, she immediately believes its something supernatural send by the triad, while her sisters believe that it may be an evil of a human nature from the clues discovered by Darryl. Cole is upset to learn that the triad has sent another agent to destroy the Halliwells. Piper feels that her inability to have a romantic evening with Leo is the result of interference from Leo's bosses.

Primrose Empath 3.06
Cole uses magic to lead Prue to what appears to be a man suffering because he is capable of feeling the emotions of others around him and can not control his empathic power. Prue casts a spell to remove this power, but unknowingly helps this cursed demon, Vincerus, to gain his ability to harm innocents again, while gaining the empathic ability herself. As Prue struggles to control her newly gained power, Vincerus seeks to kill the one that cursed him. Piper expresses concern that her relationship with Leo isn't normal enough, while Phoebe and Cole can help falling in love with each other.

Power Outage 3.07
A member of the Evil Triad reminds Cole that he's to destroy the Charmed Ones and not to romance Phoebe or they will kill him. Cole decides to use the sisters petty arguments against them by enlisting the help of Andras, the spirit of rage, who causes their normal disagreements to spiral out of control. Once the sisters begin using their magic against each other in anger, the Power of Three is lost leaving the Halliwells without their magic and defenseless.

Sleuthing With The Enemy 3.08
After suffering a serious injury at the hand of the Charmed Ones, Cole disappears leaving Phoebe to worry. As the girls prepare a potion to destroy Cole's demonic form, Belthazor, they encounter Krell, a demon bounty hunter sent by the Source to kill Belthazor. Piper reluctantly agrees with Prue to join forces with Krell to find Belthazor so they can vanquish him, as Phoebe searches for information as to the current whereabouts of Cole.

Coyote Piper 3.09
An alchemist called Kierkan creates Terra, a life essence from his own blood that can possess and control humans. When Terra desires to escape from Kierkan's control, she moves to another host body until she can come across one of the Charmed Ones, who she plans to use to destroy her creator once and for all. Piper falls victim to Terra's power, as she is dreading attending her tenth year high school reunion and discovers she has a limited amount of time before the toxic qualities of the life essence kills her soul for good. Meanwhile, Phoebe researches Cole's family history while Prue tries to help Piper get through her reunion.

We All Scream For Ice Cream 3.10
While Piper goes searching for her father, after hearing news that he's been seen in town, Prue is driven to learn the name of song whose melody is stuck in her head. She discovers the source is an ice cream truck that appears to be abducting children. As Prue and Phoebe attempt to stop the ice cream man from grabbing a little girl, they find themselves sucked into a wintry world within the truck that is inhabited but the Nothing - a force that pulls its victims out of existence. Believing the children need their help, Prue and Phoebe free them, only to discover it was a mistake and they will need the help of their father in order to set things right.

Blinded By The Whitelighter 3.11
The Halliwells encounter Natalie, a whitelighter who recently lost her most powerful charge to a warlock named Aimes. Natalie informs the girls that Eames now has the power of deflection which can be used to negate the girls power leaving them vulnerable to attack so they should proceed with caution. The sisters ignore Natalie, running off the banish Aimes not only to fail, but to discover he's plotting to eliminate all whitelighters and witches and they just helped him get the next item in his master plan.

Wrestling With Demons 3.12
The girls try to get Inspector Morris' help to protect an innocent from a possible demon attack after Phoebe has a premonition. Getting there before the attack, Prue is available to prevent the killing but lets the demon, Tom, escape when she realizes she dated him in the past. A little research leads the girls to discover that humans can be turned into demons through a sinister recruitment and training program that strips the person of their humanity, but before the process can be completed, the individual must kill an innocent. Prue sees an opportunity to restore Tom's humanity, but her sisters think they might be better off by just banishing him.

Bride And Gloom 3.13
As Piper and Leo make plans for their wedding, Cole returns to try work things out with Phoebe and Prue is kidnapped when a shape shifting warlock poses as her date. Without anyway to find Prue, Phoebe turns to Cole for help, even though he will have to risk his life to do so. Meanwhile, Prue is to be married to the warlock as part of the Priestess Dantalian's plan to obtain the Book of Shadow. Once married, Prue will turn to evil and because her magic is interconnected with her sisters and the Book of Shadows they will turn to evil also, allowing anyone of an evil nature to finally possess the magical tome.

The Good, The Bad And The Cursed 3.14
During a trip to an old ghost town with her father, Phoebe becomes magically linked to Bo, an individual from the town's past and begins to experience the effects his injuries. As Piper and Prue try to figure out how help Phoebe, Leo learns that Piper hasn't told her father that he is a white lighter. When Bo suffers from a gunshot wound, Phoebe also falls victim to the potentially fatal wound. The sisters discover that the town is cursed and stuck in a time loop, doomed to repeat the same day over and over. Prue finds herself having to work with Cole in the past to attempt to break the curse and heal Bo in order to save Phoebe.

Just Harried 3.15
As the day of Leo and Piper's wedding arrives, Piper needs reassurance from her sisters that nothing will ruin her special day. Prue finds herself tired and disturbed by her recent dreams and doesn't realize that she's been astral projecting while asleep, to a local bar, where she has been seeing one of the regulars. On the night before the wedding Astral-Prue gets into a fight with a patron who later turns up dead, leaving Prue as main suspect of the murder.

Death Takes A Halliwell 3.16
While at the beach with Phoebe, Prue notices that a woman spying on them has a mysterious shadow lurking behind her. They soon learn the woman is involved with Inspector Davidson's investigation of Cole possibly killing his former landlord. Prue proceeds to follow the woman and discovers the shadow is really the Angel of Death and becomes obsessed with preventing him from taking the life of another innocent. Meanwhile, the girls learn that a pair of Seekers are responsible for the deaths and are extracting information to learn of Cole's whereabouts, which puts the girls and Inspector Davidson's lives at risk.

PreWitched 3.17
Lacking privacy at the Manor, Piper concludes that she and Leo should move to their own apartment, leaving Prue and Phoebe to voice their objections about splitting up the Charmed Ones. As the girls work through their family problem, a witches' familiar turns against her, killing the young witch in the process. The familiar now in human form, encounters each the sisters where upon each vanquishes him. But the girls soon learn that the familiar-warlock continues to come back and if vanquished nine times will become immortal and beyond their power to destroy.

Sin Francisco 3.18
The sisters cross paths with a demon that attacks his victims by infecting them with one of the seven deadly sins in order to steal their souls. When the girls and Leo each become infected with one of the sins, they the must struggle not only to defeat the demon, but save themselves from succumbing to the powers of their sins.

The Demon Who Came In From The Cole 3.19
When Phoebe kills a demon that just murdered an innocent phophet, she learn the demon was one of Cole's brothers. Cole explains that he was hand picked by the Source to be in an elite demonic gang called the Brotherhood of the Thorn, and his brothers probably murdered the phophet so the plans of their current operation are not revealed. Against Phoebe's wishes Cole decides to return to the Brotherhood to discover their plan, so the sisters can formulate a plan to stop the Brotherhood.

Exit Strategy 3.20
After learning of Cole's deception, Raynor, the leader of the Brotherhood, decides to setup up Cole so he will lose the one thing that is keeping him from realizing his full evil potential - Phoebe's love. At Raynor's request, Cole is instructed to steal a pair of protection amulets from two different witches to continue to prove his loyalty to the Brotherhood. Even though Cole informs Phoebe of Raynor's plan and belief that Raynor has learned of Cole's betrayal to the Brotherhood and possible plan to frame Cole, Cole still finds himself tempted to revert to his demonic side.

Look Who's Barking 3.21
When Phoebe has a vision of an innocent being killed, she believes that Cole is the one responsible and plans to vanquish him for good. Meanwhile, as Cole seeks the help of an alchemist to make himself immune to the potion the Charmed Ones created to destroy him, Piper still struggles to gain control of her new power. The girls soon learn that a Banshee is responsible not Cole and the sisters cast a spell in order to track the Banshee that turns Prue into a dog.

All Hell Breaks Loose 3.22
While trying to protect an innocent doctor from Shax, a demonic assassin, Prue and Piper are caught attempting to vanquish Shax by a local news crew - which broadcasts it for the whole world to see. Prue believes they may have not vanquished Shax and continues to hunt for him unaware that their secret is now public, while Phoebe travels to the underworld in order to reverse the effects of the spell that turned Cole from his recent good ways. As the public interest in the girls' power grows, they soon discover the press and a growing crowd of people surrounding the Manor, leading them to realize that they must do something do regain their secret. Leo, returns with the only answer to the problem, the Halliwells must convince Tempust to turn back time. This leads Phoebe to have to seriously consider making a deal with The Source in order to save her sisters' lives. Time is turned back and Piper saved from certain death, but now the attack of Shax is repeated. Piper and Prue are both wounded again and Leo is no where in sight leaving Phoebe in the clutches of the source as the season finale cuts off.