In other words, Lily Sunders Has Some Regrets left the audience with very few.
We open on the angel Benjamin playing Rampage in an old-school arcade.
Suddenly, a redhead with an eye patch and two angel blades appears.

Credit: Diyah Pera/The CW
Call your friends, the redhead whispers before driving the blade home.
Ive waited so long.
Dean clarifies: Im not pissed that he cares about us.
But hes worried that Billie warned about the cosmic consequences of breaking their deal.
Sam immediately offers to come with them.
Dean reluctantly agrees, if only to keep Cas from doing anything else stupid.
Sure, whatever helps you sleep at night, Dean.
Oh, but that car ride.
That awkward car ride.
Dean and Cas arent speaking, and Sams attempts to play peacemaker fall on sullen silence.
Cas finally explains that this mission is urgent because Benjamin wouldnt call for help lightly.
This is too much for Dean, who snarks that Benjamin probably also wouldnt make half-cocked, knee-jerk choices.
Castiel snaps that whathelikes about Benjamin is that hes sarcastic, but hes thoughtful and appreciative, too.
Sam looks supremely uncomfortable to be caught in what clearlyin no wayresembles a lovers spat.
When Dean finds a discarded angel blade (sloppy!
), Cas touches it and realizes its not Benjamins.
She presses a kiss to an old-timey photo of a child before leaving her hotel.
He snipes at Dean, If I plan to do anything else stupid, Ill let you know.
These two are killing me.
Im just saying, a little partners counseling would give them more productive strategies for disagreements.
Outside, Sam correctly predicts that Deans ready to storm in.
Who wants some pie?
asks Dean, that beautiful broken record.
Ishim tosses dessert money onto the table and leaves, telling Cas to find him at the safe house.
Hes a little late, though.
I know you, Cas marvels, and we see a flash of Lily in Gibson Girl garb.
Hence, Ishim leads his troops, in high-necked blouses and long-tailed coats, to make things right.
But Akobel passionately defends humans.
How could anyone know them and not love them?
BRB; I have to go listen to The Way We Were.
In the present, Cas tells the Winchesters that he was just following orders.
Come on, man, never in the history of man- or angel-kind has that been an okay excuse.
So anyway, why is Lily still alive?
Cas counterpoint: His friendship with the Winchesters has made him stronger.
Then Cas uses his angel mojo to heal Ishims cut, depleting his own energy.
Ishim immediately starts doing one-armed push-ups because he is the freaking worst.
Lilys shocked and sets them straight about what happened inside the house in 1901.
See, her lifes work was angels.
One day she summoned Ishim, and he became obsessed with her.
He called it love, but she had to ask Akobel to protect her from Ishim.
While they wait, he asks why shes taking her revenge now, after all these years.
She explains that before the angels lost their wings, she wasnt able to hunt them down.
Ah, so that makes this partly Cas fault, since he was responsible for the fall.
Yet another sliver of guilt to add to his plate.
Furthermore, she didnt make a demon pact and instead uses Enochian magic.
Lily confirms that she used to dream about her daughter every night, but now she dreams about nothing.
Oh, and she also reinforces her reputation as a patient strategist.
She knows that Ishim will kill Dean, which will put Sam in her corner.
And for that I can wait, she concludes.
Shes… a little scary, actually.
Sure enough, Dean arrives to find a weakened Cas.
Yeah, no contest, friendo.
Then he proposes to cure Cas of his human weakness by cutting it out.
Dean is the reason Cas fell, and hes been loyal ever since.
That loyalty goes both ways, though.
Deans hand immediately drops.
Thankfully, thats when Lily and Sam show up.
Hello, my love, Ishim skeeves.
Ill never be powerless again, she hisses.
She tries to keep him immobile while he struggles forward.
With Ishim dead, the Winchesters broadly hint that Lily needs to retire her revenge agenda.
Then Castiel does something extraordinary.
Lily thanks him, and its very The Bride inKill Bill.
(Sadly, Dean doesnt tell her that if she kills Cas, thenhellbe the one out for revenge.
But in our hearts, we know thats true.)
At least, I think thats what a beer means.
Castiel affirms that he doesnt regret what he did to Billie, even if it costs him his life.
So, yeah, thats gloomy.
And yet, as Sam points out, its also a mother and her child.
Castiel acknowledges that there was a time when he wouldnt have hesitated to strike, but now?
Lets drink, and hope we can find a better way, Cas says.
(Think one of the brothers will venture to master Enochian powers at the cost of his soul?)
What did you think?
Would you keep an eye out (sorry) for Lily in future episodes?