Out of the Shadows

Written for the Dark Writing contest, feedback would be appreciated.

I've found out a lot about you,
Great what the Internet can do,
You told them where you'll be, at what time,
And what you'll wear;

Now I must prepare

A length of strong and supple rope,
Some gaffer tape, some liquid dope.
All are safely in my car
And I've left some room for you.

I'll do what I want to.

Waiting quietly in the lonely darkness,
Some may say my scheme is artless.
Out of the shadows, you appear.
My lazy rope's now tightly flexed.

It coils around your tender neck.