The Siren, who preys on married men and their wives, puts Cole under a spell and Piper and Paige must try and figure out how to save Phoebe from certain death. Piper and Leo argue and baby Wyatt swaps their powers, also causing Leo to feel the symptoms of Piper's pregnancy. Cole continues to try convincing Phoebe that he is good.
Paige nonverbally cast a spell from the Book of Shadows to fix the front door. After casting it, she said "Abracadabra!" like that spell fixed the door. The spell she cast could've been the Vanishing Spell, as it is seen fixing things before, like the broken windows in Cole's penthouse in Womb Raider. However, the spell Paige cast wasn't seen, so it remains unsure whether it was the Vanishing Spell or another spell that was capable of fixing broken things.
Leo wrote this spell to summon a Siren. He gave the spell to Phoebe, who made fun of it. However, they didn't need the spell, because Phoebe was lured to the Siren and Piper was then able to sense her.
Luring: Used by the Siren to lure her victims: David and Melissa, a Married Man, Leo and Piper and Cole and Phoebe.
Kiss of Death: Used by the Siren to kill David and to try and and kill Leo and Cole.
Super Strength(through Telekinesis): The Siren used her power of Telekinesis to increase her strength to throw Melissa against a wall.
Pyrokinesis: Used by the Siren to set David and Melissa's apartment on fire. Cole uses this power to destroy the potion bottle with the Siren Vanquishing Potion.
Technopathy: Used by Cole to turn up the TV's volume.
Fading: Type of Teleportation used by Cole and a Demonic Healer.
Orbing: Type of Teleportation used by Leo, Paige and Piper(with Leo's Whitelighter powers).
Apportation: Used by the Darklighter to apport his crossbow and an arrow.
Pyrotechnics: Piper's baby turned her power of Molecular Combustion into this power, causing Piper to create fireworks around the Darklighter instead of blowing him up.
Projection: Used by unborn Wyatt to pacify Piper's power of Molecular Combustion.
Telekinetic Orbing: Used by Paige to orb the darklighter crossbow into her hands.
Power Swapping(through Projection): Piper and Leo's baby swapped their powers, using Projection from the womb. Later, their powers were swapped back.
Molecular Combustion: Used by Leo to blow up the glass of the front door and the glass of a cabinet in the kitchen. He also blew up several things in the Siren's lair, aiming for her, before he succeeded in blowing her up. Piper blew up a bagel to show her power was restored.
Enhanced Senses: The Demonic Healer was able to smell that the Siren was attacked by a Charmed One.
Omnilingualism: Used by Piper to speak French, like her charge.
Darklighter Arrows - An arrow, poisonous to Whitelighters, used by Darklighters to kill Whitelighters. The poison will slowly kill them, if not healed in time.
The Siren luring David and Melissa.
The Siren using Kiss of Death on David.
Melissa thrown across the room by the Siren, using Telekinesis to increase her strength.
The Siren using Pyrokinesis to start a fire.
Cole turning up the TV's volume.
Cole fading out.
Leo orbing in.
The Siren luring a man.
The Darklighter apports his crossbow.
The Darklighter apporting an arrow.
Piper created fireworks instead of blowing the Darklighter up.
Paige orbs the Darklighter crossbow into her hands.
The Siren smokes in.
The Seer luring Leo.
The Siren using Kiss of Death on Leo.
Paige orbing in with Piper.
Leo orbing out with Melissa.
Piper's power is pacified by her unborn baby.
Piper is thrown out of a window by the Siren.
The Siren smokes out.
Paige orbs for Piper.
Leo heals Melissa.
Paige orbs in with Piper.
Melissa is frozen by Piper.
Piper and Leo's unborn baby swaps their powers.
Piper orbs.
Leo blows up the glass of the front door.
The Demonic Healer smells the Siren was wounded by a Charmed One.
Cole fading in.
Paige orbing out with Piper.
Piper orbing out.
Piper orbing in.
Piper speaks her charge's language.
Leo practicing Piper's explosion power.
Piper orbing in.
Piper orbing out.
Demonic Healer fading out.
Paige orbing in.
Piper orbing in.
Paige orbing out.
Piper orbing out with Leo.
The Siren uses her Kiss of Death on Cole.
Phoebe is flung by the Siren.
Cole destroys the potion bottle.
The Siren starting to smoke out.
Piper senses Phoebe.
Piper orbing in with Leo.
Leo blows up a vase in the Siren's lair, missing the Siren.
Siren - The Siren lures man with her song and then incinerates them in front of their wives eyes. She then destroys the couple with the very flames that consumed her.
Demonic Healer - He healed the Siren, who was impaled by Paige.
Darklighter - Summoned by Paige for interogation. He managed to escape from the Crystal Cage. However, Paige vanquished him with his own crossbow.
Melissa - A future Whitelighter. Her husband was killed by the Siren. When she discovered Magic existed, she panicked and ended up in jail, but Paige and Darryl managed to get her out.
David - Melissa's husband. He was lured and killed by the Siren.
Elise Rothman - Phoebe's boss. She ordered Phoebe to interview Cole about his heroic rescue of Melissa.
Married Man - He almost became a victim of the Siren, but she found out Melissa was still alive and went after her, deciding to let this man go.
Cole finds out about Piper's pregnancy when he witnesses Leo's pregnancy symptoms.
This is the second time Piper heals a loved one, the first time was in "Love Hurts". She displayed far more control of the power. However, she had more trouble sensing a charge. She also displayed much greater control over Orbing than Paige did in the beginning, despite it being the first time she used it.
Cole saves the future whitelighter Melissa, and Leo says that the Elders said if he hadn't, she wouldn't have been able to do the good she was destined to do. It is unknown whether or not she had a Whitelighter at that point in her life.
This is the only episode in the entire series where Leo kisses someone other than Piper.
When Leo is writing the spell, Phoebe mentions trying to summon a leprechaun, perhaps foreshadowing what happens in the episode Lucky Charmed?
When Piper tries to blow up a Darklighter the baby changes her power to fireworks and when she tries to blow up the Siren the baby changes it to flowers.
Phoebe: Ok. Well, because you have demonic powers and a lot of them, you became a bigger threat… than the Siren. And that's only one way out of a thousand that your powers can turn against me.
Leo: Relax? I'm sore all over, I'm without my powers, and I'm about to have to fight a demon. My own aftershave is making me sick. How does Piper do this?
Phoebe: Well, she, too, sometimes gets a little cranky.
Leo: The Elders are going to kill me. If anything happens to my charges, they're going to clip my wings and... (Leo burps an orb-like bubble) Oh, this is ridiculous. Piper! Piper! (to Phoebe) Why do they call it morning sickness if it lasts all day?
(Leo burps and an orb-like bubble pops out of his mouth)
Piper: Oh, is that what you think? Because I'm self-healing now that you don't need to be around?
Leo: No. I don't think that at all. Look, let's just focus on what's going on with your powers.
Piper: No. I'm sick and tired of focusing on everything but us. I feel like I'm going through this whole pregnancy thing by myself, and I do not like it.
Piper: Leo, I have growing powers inside of me, powers that I do not understand. And the only person who does understand them never has time to talk. Add that to raging hormones, and I guarantee you I am absolutely entitled to do the crying thing.
Leo: Oh singing lady of the dusk, who preys on men, turns love to lust, we hearken ye...
Phoebe: "We hearken ye"? What, are we trying to summon a leprechaun?
Phoebe:(On the phone with Cole) Death did us part Cole, just because you figured out a way to come back doesn't mean that I didn't keep my end of the bargain!
Phoebe: Yep. (quoting the card) "Sorry I tried to strangle you?" Probably not a card that the florist gets to write everyday huh?
Phoebe: Woman to woman, ok? Cole was the love of my life, and I am finally learning to live my life without him. Now, calling him for a favor would be opening up a can of worms that I have worked so hard to close.
Elise: Woman to woman? If you're still describing this guy as the love of your life, then the can is open, the worms are out, and you may as well use them to go fishing.
Phoebe:(to Leo) So you're ready to kick some ass...sis?
Piper: Kiss this, bitch! (Piper tries to blow up The Siren, but instead showers her with flowers.) Ohhh bad baby!
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