"Thirteen Plus One" follows a different format than the four preceding books in the Winnie Years series. The others were episodic - almost short story collections - with one tale for each month of Winnie's (however old she is in that book) year. This final book is more of a novel, and primarily covers the summer of her 14th year.
After being disappointed in her boyfriend, Lars, and his spectacularly unromantic gift idea for birthday, and then learning that he has to leave the country with his family for a month during the summer, a disappointed and disillusioned Winnie agrees to go to a month-long summer camp with her friend Dinah. (Her other best friend, the rather irritating Cinnamon, also goes along.) The purpose of the camp is for the campers to protect and assist South Carolina's nesting sea turtles, but the reader could be forgiven for forgetting that, as it has almost nothing do with the story. Primarily, Winnie obsesses about boys and friends; Lars, imperfect, but hers, and Alphonse, gloriously hunky, and in South Carolina with her, but should she pursue him when got Lars back home? Dinah remains pleasantly awkward and faithful; and Cinnamon, who remains so brash and rude much of the time that it is difficult to imagine Winnie and Diana actually liking her at all. (I certainly don't.)
Not a bad book, but a weak ending to the series. The other four were better. ( )

I'd like to give this 1.5 stars, but my sense of integrity won't let me, because I only read the beginning and the end.  How did it end up on my to-read lists?  Did I really want to learn more about perky girls with perfect families and more BFFs than they know what to do with?  Gag.

I loved all the Winnie books and sadly I haven't been able to read Thirteen. I haven't read them in order and now I'm on ten. ( )

Good Book mostly for girls but still explains loads

Not lauren Myracle's best work, I admit, but did have me laughing out loud at some parts. Winnie endures escapades with penguins, sisters, boyfriends, and the like. She enjoys turtles, friends, and the all around yummy-ness of summer and 13+1!! ( )