“Oh, I see,” said Father Brown.
“I know Sybil Rye pretty well, and her character is a great part of this story. It is a very fine character in both senses: that is, it is of a noble quality and only too delicate a texture. She is one of those people who are terribly conscientious, without any of that armour of habit and hard common sense that many conscientious people get. She is almost insanely sensitive and at the same time quite unselfish. Her history is curious: she was left literally penniless like a foundling and Sir Arthur took her into his house and treated her with consideration, which puzzled many; for, without being hard on the old man, it was not much in his line. But, when she was about seventeen, the explanation came to her with a shock; for her guardian asked her to marry h
