“Bark Humbug,” author David Rosenfelt’s “Andy Carpenter Mystery” number 34, is every bit as entertaining, suspenseful, and funny as each of the preceding titles in the series. In other words, readers are virtually guaranteed a terrifically good time. But there’s more good news: in my carefully considered opinion, “Bark Humbug” offers us even more beautiful features than the earlier entries — funnier funny stuff, more suspenseful suspense, and some effective new techniques that add to our enjoyment of every page.

In this, the thirtieth entry in David Rosenfelt’s “Andy Carpenter Mystery” series, “The More the Terrier,” the dog, we are happy to report, actually plays an important role in the unfolding of the plot. Murphy, apparently a Yorkie mix, shows up out of nowhere at Andy’s house and is soon recognized as a little guy whom Andy and his family and friends had rescued sometime before his new appearance at their doorstep. They remember the family who had adopted him, and they return him to the Bremers’ home. Mrs. Bremer is thrilled to have him back, yet she is terribly sad. Her son, BJ, has been arrested for murder.