What is it ?" "If you really want to know," Heneage said, "I believe that Wrayson has kept something back.

It is a very dangerous thing to do, and I believe that he realizes it.

I believe that he has some secret knowledge of the affair which he has not disclosed--knowledge which he has kept out of his evidence altogether." "A--guilty--knowledge ?" Mason whispered.
"Not necessarily!" Heneage answered.

"He may be shielding some one." "If you are right," Mason said anxiously, "it is a serious affair." "Very serious indeed," Heneage assented.

"I believe that he is realizing it." The Colonel came back looking a little disturbed.
"Sorry, boys, but I must be off," he announced.