I have tried all the other ways.

I have tried to climb the wall, but there was glass at the top.

I can't get out.

And they are searching the gardens with lanterns." Even as he spoke they saw lights moving among the ilexes.
"They can't know," she said faintly.
"It does not seem possible.

They are probably looking for someone else, but I can't be found here at this hour without raising suspicion.