dogging

In the homely Alpine villages or in the lonely mountain passes, I could tell by his quick glancing eyes and his sharp scrutiny of every face that passed us, that he was well convinced that, walk where we would, we could not walk ourselves clear of the danger which was dogging our footsteps.

SIR [it ran],—I can assure you that you are wasting your time in dogging my movements.

A stranger then is still dogging us, just as a stranger dogged us in London.