After much discussion it was agreed that thirty picked men should be at Rupert's orders at ten that night, an hour at which all Dort would already be sound asleep.
The chief constable then proceeded with Rupert to the houses situated behind that which was intended to be attacked.

It was reconnoitred from that side, and found to be in darkness.

The owners of these houses, strictly charged to secrecy, were informed of what was going on, and promised all aid in their power.

A dozen ladders of various lengths were now got together.
Then they went to the house adjoining, and made their way out on to the roof.

This, like many of the Dort houses, was furnished with a terrace, placed between the gabled roofs, which rose sharply on either side.