See who it is, Harry

[Harry and Marcus are distracting Mrs. Wilberforce while Louis deals with the Major on the roof] Mrs. Louisa Wilberforce:
It won't do any harm to tell you now that Major Courtney has gone to the police. They'll be here shortly. [there is a loud crash from outside] Mrs. Louisa Wilberforce:
Oh! Whatever is that? Harry:
I expect something fell off the roof, mum. Mrs. Louisa Wilberforce:
The roof? Harry:
Probably a... chimney-pot. Mrs. Louisa Wilberforce:
A chimney-pot? Professor Marcus:
See who it is, Harry [pushes Harry out the door]