You're in for surprise
You're in for a shock
In London town streets
When there's darkness and fog
When you least expect me
And you turn your back
I'll attack

I smile when I'm sneaking
Through shadows by the wall
I laugh when I'm creeping
But you won't hear me at all

You'll soon shake with fear
Never knowing if I'm near
I'm sly and I'm shameless
Nocturnal and nameless
Except for "The Ripper"
Or if you like, "Jack The Knife"

Any back alley street
Is where we'll probably meet
Underneath a gas lamp
Where the air's cold and damp

I'm a nasty surprise
I'm a devil in disguise
I'm a footstep at night
I'm a scream and a fright