As I said at the beginning, I like Baxendale's work--he has a nice way of integrating supporting characters into the story and a penchant for bloodthirsty gore that I find quite fun. He also slips in details, some drawn from established continuity (an appearance by Detective Swanson, mentioning the trip to CERN from The Lost Souls radio play) and others introduced for the first time (Jack as having fought in the trenches in World War I and on the battlefield in World War II; hints that the Time Agency may have been reponsible for the sinking of Atlantis).
The Undertaker's Gift features two related threats: 49th Century lawyers named Hokrala who want to sue Jack for messing up Earth in the 21st Century; and a group of aliens nicknamed Pallbearers (because of their penchant for hanging out in graveyards and general creepy appearance) who believe that Jack has misused the Rift and that therefore humanity should be destroyed. The ending, unfortunately, is very much in a deus ex machina vein: Cardiff is pummelled by earthquakes and all manner of catastrophe, but a "Vortex Dweller" alien "resets" everything so no last harming takes place. All in all, rather disappointing stuff.