Waugh became a priest and then an exorcist, part of a team of outré characters controlled from the future version of Vatican City - others from this team include Pussyfoot 5 (a group of feisty female fighters which had its own spin-off series) and The Catechist, who later went rogue.
Freddy Waugh, Devlin's brother, remains in the background, arguably Mycroft Holmes to Devlin's Sherlock.