Margaret.

Hush! It's Christmas Eve. Somebody may be stirring.

Otto.
What time is it now?

Margaret.
[Looking across at clock on mantelpiece.] Ten minutes to twelve.

Otto.
Go to bed. I don't want to get you into trouble. Which door will he come in by?

Margaret.
[Pointing to lower door, R.] This one.

Otto.
I must have cover. [Indicating Christmas tree.] This will do. He must not see me too soon.

Margaret.
Otto, if it has to be done—let it be done quickly.

Otto.
It shall be.

Margaret.
When you hear the front door open and close you'll know he has come into the house. And as soon as this door opens—before he has time to switch on the light——

Otto.
I'll kill him like a dog—damn him!