This confidence might have put the false King to the blush, but it did not. Pretending to be very friendly, he so surrounded his brother with spies and traps, that Robert, who was quite in his power, had nothing for it but to renounce his pension and escape while he could. Getting home to Normandy, and understanding the King better now, he naturally allied himself with his old friend the Earl of Shrewsbury, who had still thirty castles in that country. This was exactly what Henry wanted. He immediately declared that Robert had broken the treaty, and next year invaded Normandy.