I pass over the scene that followed. I was made to say exactly where this treasure was found. I was made to reveal the date.

“March 13,” said Caroline. “Just six months ago. Ah!”

Out of a babel of excited suggestions and suppositions three theories were evolved:

1. That of Colonel Carter: that Ralph was secretly married to Flora. The first or most simple solution.

2. That of Miss Gannett: that Roger Ackroyd had been secretly married to Mrs. Ferrars.

3. That of my sister: that Roger Ackroyd had married his housekeeper, Miss Russell.

A fourth or super-theory was propounded by Caroline later as we went up to bed.