The first step in closing the net was, of course, to let Amelia Walker know about it.
During this time, since Sebastian Carter was still new and fresh to Jane Howard, it wasn't very convenient for them to be intimate at home with so many people around. So the two usually met in hotel rooms outside. A couple of times, when Amelia wasn't paying attention, Jane secretly flirted with Sebastian at home. She quietly sneaked into Sebastian's study and just when they were in the heat of their passion, Amelia suddenly knocked on the door. Jane got scared and quickly hid under the desk. Amelia came in to discuss day-to-day matters with Sebastian, who casually brushed her off.
Although these actions escaped Amelia's notice, they couldn't escape Helen Blair's, for the pinhole cameras she had placed captured every scene of their lovemaking from start to finish, and more than just once.