Something must be done.

Where is Kelley ?" At the suggestion, Catesby instantly darted to the spot where the seer had stood.

He was not there.

He then questioned the servants, whose teeth were chattering with fright, but they had neither heard him depart, nor could tell anything about him; and perceiving plainly from their trepidation that these men would lend no aid, even if they did not join the assailants, he returned to communicate his apprehensions to Garnet.
During all this time the knocking and vociferations at the door had continued with increased violence, and reverberated in hollow peals along the roof and aisles of the church.
The emergency was a fearful one.

Catesby, however, had been too often placed in situations of peril, and was too constitutionally brave, to experience much uneasiness for himself; but his apprehensions lest Garnet should be captured, and the sudden and mysterious disappearance of Viviana almost distracted him.