No mention is made of either James "Jimmy" Scott (Jerry Butler) in Taboo or Brian McBride (Blake Palmer) in Taboo II, but both of their presences in Taboo III are accepted without apparent question.
Dorothy LeMay's character of Sherrie McBride, who was featured prominently in Taboo and Taboo II, never either appears or is even mentioned in Taboo III.
Kevin James's character of Gregory "Junior" McBride Jr., who was featured prominently in Taboo II, never either appears or is even mentioned in Taboo III.