Kate Mularkey is thrilled when Tully Hart moves in across the street, and the two form an immediate friendship that remains strong through the next thirty years, until one act of betrayal threatens to destroy both their lives and the friendship that has seen them through life's highs and lows.

"Once, a long time ago, I walked down a night-darkened road called Firefly Lane, all alone, on the worst night of my life, and I found a kindred spirit. That was our beginning. More than thirty years ago. TullyandKate. You and me against the world. Best friends forever. But stories end, don't they? You lose the people you love and you have to find a way to go on. . . ." Tully Hart has always been larger than life, a woman fueled by big dreams and...

Second-grade best friends Ivy and Bean beg for ballet lessons, then, when they are cast as squids in their first recital, scheme to find a way out of what seems to be boring, hard, and potentially embarrassing.

"Jake Hayes is missing. This much is certain. At first, his wife, Nina, thinks he is blowing off steam at a friend's house after their heated fight the night before. But then a day goes by. Two days. Five. And Jake is still nowhere to be found. Lily Scott, Nina's friend and coworker, thinks she may have been the last to see Jake before he went missing. After Lily confesses everything to her husband, Christian, the two decide that nobody can find out...

What would you do if you thought you murdered your best friend? And if everyone else thinks so too? What if the truth doesn't matter? As Lucy Chase's Texas hometown begins to tell versions of what happened and who Lucy is to a nationwide, true crime obsessed audience, at the bequest of her grandmother, she returns to the place she vowed never to set foot in again to solve her friend's murder, even if she is the one that did it.

As the Terrible Two face the end of their time together in Yawnee Valley, they are determined to pull a prank that changes the town forever.

As Bridge makes her way through seventh grade on Manhattan's Upper West Side with her best friends, curvacious Em, crusader Tab, and a curious new friend--or more than friend--Sherm, she finds the answer she has been seeking since she barely survived an accident at age eight: "What is my purpose?"

In his first journal, middle schooler Rowley Jefferson, Greg Heffley's sidekick, records his experiences and misguided decision to write a biography of Greg, who, in his own mind, is destined to become rich and famous.

Best friends and sixth-graders Bumble and Lizard go on a quest to save the severely endangered language, Guernésiais, partly to impress Bumble's linguist mother.

Stephanie's relationship with her best friend, Rachel, changes during her first year in junior high as she tries to conceal a family problem and meets a new girl from California.