So everyone hates Wormtongue? I'm no fangirl, but I do pity him. Much in
the same way Frodo pities Gollum. In a way, Wormtongue and Gollum have a
lot in common- their desire for one thing (Éowyn and the Ring
respectively). Wormtongue was taken advantage of by Saruman, and this is
his plee, as he's murdering Saruman

GRÎMA'S REVENGE
A light falls on the grey wanderer,
He casts his filthy cloak aside.
I have need to be afraid it seems;
The king has opened his eyes wide.
My Lord you never told me
That Gandalf the Grey was now white.
I lost my grip on Théoden
And I was startled into flight.
My Lord this Mithrandir has come,
Bringing with him hope of all men...
But I am not afear'd my Lord-
Our power will come again.
I see his shining staff
And the glitter of his wicked eyes,
I told them, my Lord to take it,
But they did not heed my cries.
His staff is now raised higher,
My lord, I was afraid,
I ran then from the castle
And by his mercy I was saved...
But my Lord I never sought it,
I did not want to run away,
His nasty powers took me
And I fell onto the hay.
My Lord I came right to you,
To bring you such ill news
And happier, I tell you:
That at the Deep there are too few.
My Lord I did what you told me,
I had the king deceived
But when this distant strangers entered...
I'm afraid that I was seized.
They threatened me, oh Master
I knew not what to do!
Then Stormcrow he released me
And sent me back to you.
Oh Grìma, Grìma, Grìma
What a little fool you've been!
This Saruman is no friend of yours-
That you should have seen.
Gandalf comes and offers
A chance to flee this awful man.
Spit on the ground beneath him,
Hit him if you can!
Poor Grìma is alone now,
Saruman is gone.
I thought he was a kind man
But I was very wrong.
My Lord I sought to serve you
For the rewards that you would give:
Gold and cheer and Éowyn-
The fairest on this earth to live.
I was deceived by your trickery,
And in my own turn I did lie
But you were to betray me
You were worthless so you die.