Best Holiday read (and it's not the first time I've waved the flag for her!!) are Janet Evanovich's Stephanie Plum books, they have a bit of everything, thriller, romance, and most of all very funny - especially if you are a female in your late 30's!!!
Start at the begining with One for the Money, then Two for the Dough - helpfully all titles are numbered so you know which order to read them - you can read them out of sequence but they are better if you read them in order. Enjoy your hols!