We want someone who doesn't have savage dogs running at his heels.

Then she ran toward the cave, with Conan at her heels.

Sean raced forward, conscious of the small dark shape that ran at his heels.

A tremor ran through it, with darkness at its heels.

Where he can ride, I can follow, running at his heels.

Nancy urged as she ran from the room, Helen at her heels.

Now this, for example: these two girls running along one behind the other, the second one nearly at the first one's heels.

And all the time the dog ran with him, at his heels.

Almost as she called he ran in, alert, ready, at his heels, the dog.

I've run at your heels for close upon a fortnight.