Everyone knows what it means to have a teal envelope taped to their locker on the first day of the month. Everyone except new girl McKinnon Gregory. The envelope is the start of a monthly tradition called the Secret Admirers, and something McKinnon never thought she'd see. To her surprise—and everyone else's—the teal envelope is taped to her locker on March first. McKinnon only has one month to figure out the clues. But she barely knows anyone, which makes it infinitely harder to determine her secret admirer's identity. Will she figure it out before the month's over? And if she does, will the guy she's fallen for through letters be just as amazing in person?

Everyone at Ryder High knows what it means to have a teal envelope taped to their locker on the first day of the month. But for Kerri Thomas, it’s not quite the moment she was waiting for. Busy with school, friends, and volleyball, she doesn’t know if she has time to play along and figure out who her Secret Admirer is. The clues send her on a wild scavenger hunt, proving that her admirer knows her better than she expected. But none of the clues give her hints about the guy. Kerri has a team of suspects, including her friends on the baseball team, but narrowing it down is near impossible without more information. Who could be Kerri’s secret admirer, and why isn’t he revealing anything about himself? Will Kerri be able to put the pieces of the puzzle together to figure it out?

Everyone at Ryder High knows what it means to have a teal envelope taped to their locker on the first day of the month. Jade Rose knows. She just doesn’t care. The Secret Admirers game goes against every feminist notion she stands for. It’s old fashioned, misogynistic, and too mainstream for her. That is, until she gets a teal envelope. And finds out that she and her secret admirer have a few things in common already. Her acceptance may have been accidental, but when the clues start coming in the form of movies to watch, she gets sucked in quick. Will Jade and her friends be able to narrow down their list of suspects and figure out who is behind the camera?

Everyone at Ryder High knows what it means to have a teal envelope taped to their locker on the first day of the month. Spencer Matthews assumes the Secret Admirers game is on pause, since it’s June and school is out for summer. Then a teal envelope with her name on it arrives in the mail. Spencer is eager to play, but her Secret Admirer makes her work for her clues by playing a trivia game app he created. Her spreadsheet of suspects is color coded, and Spencer is confident she knows who her admirer is after only the first two clues. But something goes wrong, threatening the future of the game. Will Spencer be able to continue playing? And if so, will her guesses still be right?

Everyone at Ryder High knows what it means to have a teal envelope taped to their locker on the first of the month. Sofia Castillo didn’t get that. But she did a giant ice cream sandwich delivered to her house with her envelope. Things take a turn when her family goes on vacation the day after her envelope arrives. It throws a wrench in her secret admirer’s plan, and he has to change tactics and deliver clues via text instead. Sofia knows it’s someone close to her, but who? Texts come at all times—even when she’s in the same place as her admirer. Without too many specific clues, Sofia decides to just enjoy the ride and the conversation. Will Sofia be able to coax some clues out of her admirer? Or will he reveal himself when things take a sudden turn?

Everyone at Ryder High knows what it means to have a teal envelope taped to their locker on the first day of the month. The first day of August is Calista Forrester’s seventeenth birthday. Her teal envelope showed up among the gifts at a surprise party. A party she didn’t want. Just like how she doesn’t want a Secret Admirer. Panged with guilt, and stuck with a dead phone battery, she accepts the challenge by default. Her clues come in the form of tickets to different places, each with a task to complete while she’s there. It’s an introvert’s worst nightmare, but at least she’s allowed to bring a friend along. When school starts, Calista is shoved into the spotlight as the chosen girl. That’s when she decides enough is enough. Will Calista’s decision impact more than just her? And will her secret admirer let her give up that easily?

Everyone at Ryder High knows what it means to have a teal envelope taped to their locker on the first day of the month. For Marley “Sunny” Sorenshine, a Secret Admirer might be just what she needs to put her recent, very public, break up behind her. Her optimism is dimmed when she reads the first note—her admirer was tricked into participating. He didn’t choose Marley, a dart did. And he wants her to quit. But if Marley is good at anything, it’s seeing the silver lining and standing up for herself. She decides to throw her Sunny disposition into the game to challenge her Admirer’s grumpiness. The guy can’t be all that bad—he carefully crafted a crossword puzzle just for her. And as the month goes on, he shares more personal details that intrigue her. Will Marley stick it out until the end, or will her Admirers morose attitude get the best of her?

Everyone at Ryder High knows what it means to have a teal envelope taped to their locker on the first day of the month. Skye Turner came close to having one, but considering she and her boyfriend, Andrew Del Marco, had been dating for a week already, she couldn’t take it. So she decides cheat the Secret Admirer system and divert the teal envelope to someone else. Emilia Rosemary is just like every other girl when she gets her envelope—shocked. But the envelope isn’t from a real Secret Admirer. It’s from Skye, posing as Emilia’s crush, Chase McNeill. Skye and her friends develop a plan to have both Emilia and Chase surprised with the big reveal at the Homecoming dance. But when Chase learns the truth, will the plans be ruined? Will Emilia be upset when she finds out her friends deceived her?

Everyone at Ryder High knows what it means to have a teal envelope taped to their locker on the first day of the month. Mya Burton received not only one envelope, but two. The second envelope held a change to the Secret Admirer program—if she agreed, Mya would be the first girl to have two Secret Admirers. It had never been done before. In each clue, the boys would both answer the same basic questions, followed by writing a short, non-identifying letter to Mya. At the end of the month, she would have to choose just one without knowing who he really is. But before she can, a shakeup hits the school. A hater slanders the game, leaving Mya feeling defeated and the other chosen girls needing to stick together. Will Mya be able to finish her month on a happy note? And will her blind decision be the best one for her?

Everyone at Ryder High knows what it means to have a teal envelope taped to their locker on the first of the month. This month is different. This month belongs to Max Newman. Prankster, jokester, overall funny guy. And the first student to ever receive a teal envelope from a girl. The Secret Admirers organization switched things up. They allowed a girl to be the admirer, and Max is about to make history. One problem—he only has three weeks to complete an entire bingo board. Some of the things on it are out of his control. Some things are right up his alley, though, like serenading the principal and pranking his best friend. Will Max finish the bingo board and get the reveal location? Or will he become the first guy at Ryder High to fail his challenge?

Everyone at Ryder High knows what it means to have a teal envelope taped to your locker on the first day of the month. But when a teal envelope arrives to McKinnon’s house mid-December, it draws nothing but confusion. Soon, she finds out everyone who participated in the Secret Admirer program over the last ten months also received a teal envelope. But inside is not a letter. It’s a ticket. All the chosen girls and their admirers have been invited to a New Year’s Eve masquerade party and encouraged to dress in couple’s costumes. But who is putting on this party and why? Will McKinnon and her friends finally get the answers they’ve been waiting for? This is an extended series epilogue, and only meant to be read after all ten Love Notes books!! Do not read if you have not finished the entire series.