INTERNATIONAL VISITING AUTHORS’ SERIES: Lovable serial killer Serge Storms is back and coming to the rescue of a Midwestern couple who aren't finding Florida quite as charming as he does in The Riptide Ultra-Guide (William Morrow, $25.99), the sixteenth installment in Tim Dorsey's bestselling series. When newly unemployed Patrick and Barbara McDougal decide a vacation in Florida is just what they need to put life back on the right track, awful accommodations, a robbery, and a not-so-helpful police department make them rethink their decision to drown their troubles in paradise. Luckily, charismatic (and crazy) tour guide Serge Storms and his sidekick, Coleman, are up for another action-packed adventure in this outrageous crime thriller that Tim Dorsey fans won't soon forget.