As much as we like the excitement of the latest literary star, let’s face it: Summer is often about old friends.

Visiting and catching up with friends — or carrying on traditions — can be a rite of both summer vacations and reading. Books by popular authors such as Daniel Silva and Jennifer Weiner are as familiar in the pool bag as towels and sunscreen. And there’s a reason Suspense Night is one of the St. Louis County Library’s most popular events: Although the lineup varies, most of the names are well known. (This Thursday it’s Gregg Hurwitz, Jeffery Deaver, Meg Gardiner and Reed Farrel Coleman.)

In addition to the above novelists, we offer 20 more upcoming books, both fiction and nonfiction. Some are from new voices, of course. And no one assumes summer reading is only about the latest best-seller. But just in case you want to meet up with an old friend, you should have good luck.

Information is from publishers’ advances, Publishers Weekly and other previews. Books are listed by publication dates, which are subject to change.