On heels - Idioms by The Free Dictionary
*on someone's heels
Fig. following someone very closely; following very closely at someone's heels. (*Typically: hard ~; hot ~; right ~. See also on someone's tail.) I ran as fast as I could, but the dog was still hard on my heels. Here comes Sally, and John is hot on her heels.
References in periodicals archive
The new collection from Dumond rings out contrast styles with arabesques designs on heels
to wild conjures on boots.
The son of Domedriver quickened impressively to land a bit of a gamble at Brighton on his reappearance and ran a fine race on the all-weather at Lingfield last time considering he was stuck on heels
when the contest began in earnest and had to make his challenge up the unfavoured inside rail in the straight.