here and here. Could Keith Denison be a personal temporal nexus?
Lorenzo touches and affects many world-lines. Denison, possibly, affects or manifests a quantum probability field. He is like:
"...a gun loaded with trouble, always cocked on a hair trigger." (p. 362) (For full reference, see previous post.)
Twice, Denison is captured and loses his timecycle in a timeline that has to be deleted by the Time Patrol. Of these divergent timelines, the second is generated by Lorenzo. The first is even more mysterious. A story that is a typical hero myth seems to be literally true. But it turns out to be Denison's presence that has generated the story. Everard and Denison must rearrange events so that the myth is again only a myth. Does Denison's probability field draw him towards being captured in divergent timelines? Only time would have told us.