But who struck the blow ?" This was a difficult question.

It could not have been Basil Saxon, for he was at the Marlow Theatre on that night with his sister.

Cuthbert had no motive, and Jennings quite believed his explanation as to his exploration of the park between the hours of ten and eleven.

Hale, Clancy and Mrs.Herne were all out of the house before the blow had been struck, and, moreover, there was no reason why they should murder a harmless old lady.

Maraquito confined to her couch could not possibly have anything to do with the crime.