Like an avenging, purple-haired Jedi bringing balance to the mansplained universe, Bee Königswasser lives by a simple code: What would Marie Curie do? If NASA offered her the lead on a neuroengineering project—a literal dream come true after years scraping by on the crumbs of academia—Marie would accept without hesitation. Duh. But the mother of modern physics never had to co-lead with Levi Ward.

As a third-year PhD candidate, Olive Smith doesn't believe in lasting romantic relationships—but her best friend does, and that's what got her into this situation. Convincing Anh that Olive is dating and well on her way to a happily ever after was always going to take more than hand-wavy Jedi mind tricks: Scientists require proof. So, like any self-respecting biologist, Olive panics and kisses the first man she sees.

Mallory Greenleaf is done with chess. Every move counts nowadays; after the sport led to the destruction of her family four years earlier, Mallory’s focus is on her mom, her sisters, and the dead-end job that keeps the lights on. That is, until she begrudgingly agrees to play in one last charity tournament and inadvertently wipes the board with notorious “Kingkiller” Nolan Sawyer: current world champion and reigning Bad Boy of chess.

Mara, Sadie, and Hannah are friends first, scientists always. Though their fields of study might take them to different corners of the world, they can all agree on this universal truth: When it comes to love and science, opposites attract and rivals make you burn….

Scarlett Vandermeer is swimming upstream. A Junior at Stanford and a student-athlete who specializes in platform diving, Scarlett prefers to keep her head down, concentrating on getting into med school and on recovering from the injury. She has no time for relationships. Swim captain, world champion, all-around aquatics golden boy Lukas Blomqvist thrives on discipline. It’s how he wins gold medals and breaks records: complete focus, with every stroke. On the surface, Lukas and Scarlett have nothing in common. Until a well-guarded secret slips out, and everything changes.

Rue Siebert might not have it all, but she has enough: a few friends she can always count on, the financial stability she yearned for as a kid, and a successful career as a biotech engineer at Kline, one of the most promising start-ups in the field of food science. Her world is stable, pleasant, and hard-fought. Until a hostile takeover and its offensively attractive front man threatens to bring it all crumbling down.

Harriet and Wyn have been the perfect couple since they met in college—they go together like salt and pepper, honey and tea, lobster and rolls. Except, now—for reasons they’re still not discussing—they don’t. They broke up five months ago. And still haven’t told their best friends. Which is how they find themselves sharing a bedroom at the Maine cottage that has been their friend group’s yearly getaway for the last decade.

Felicity “Fizzy” Chen is lost. Sure, she’s got an incredible career as a beloved romance novelist with a slew of bestsellers under her belt, but when she’s asked to give a commencement address, it hits her: she hasn’t been practicing what she’s preached. Fizzy hasn’t ever really been in love. Connor Prince, documentary filmmaker and single father, loves his work but when his profit-minded boss orders him to create a reality TV show, Connor is out of his element. Desperate to find his romantic lead, a chance run-in with an exasperated Fizzy offers Connor the perfect solution.

Misery Lark, the only daughter of the most powerful Vampyre councilman of the Southwest, is an outcast—again. Her days of living in anonymity among the Humans are over: she has been called upon to uphold a historic peacekeeping alliance between the Vampyres and their mortal enemies, the Weres, and she sees little choice but to surrender herself in the exchange—again...

Hallie Welch fell hard for Julian Vos at fourteen, after they almost kissed in the dark vineyards of his family’s winery. Now the prodigal hottie has returned to Napa Valley, and when Hallie is hired to revamp the gardens on the Vos estate, she wonders if she'll finally get that smooch. But the starchy professor isn’t the teenager she remembers and their polar opposite personalities clash spectacularly.

Anastasia Allen has worked her entire life for a shot at Team USA. It looks like everything is going according to plan when she gets a full scholarship to the University of California, Maple Hills and lands a place on their competitive figure skating team. Nothing will stand in her way, not even the captain of the hockey team, Nate Hawkins.

Hallie Piper is turning over a new leaf. After belly-crawling out of a hotel room (hello, rock bottom), she decides it’s time to become a full-on adult. She gets a new apartment, a new haircut, and a new wardrobe, but when she logs onto the dating app that she has determined will find her new love, she sees none other than Jack, the guy whose room she snuck out of.

Amelia Rose, known as Rae Rose to her adoring fans, is burned-out from years of maintaining her “princess of pop” image. Inspired by her favorite Audrey Hepburn film, Roman Holiday, she drives off in the middle of the night for a break in Rome . . . Rome, Kentucky, that is. When Noah Walker finds Amelia on his front lawn in her broken-down car, he makes it clear he doesn’t have the time or patience for celebrity problems. He’s too busy running the pie shop his grandmother left him and reminding his nosy but lovable neighbors to mind their own damn business.

Hannah Brooks looks more like a kindergarten teacher than somebody who could kill you with a wine bottle opener. Or a ballpoint pen. Or a dinner napkin. But the truth is, she’s an Executive Protection Agent (aka "bodyguard"), and she just got hired to protect superstar actor Jack Stapleton from his middle-aged, corgi-breeding stalker.

Stella Lane thinks math is the only thing that unites the universe. She comes up with algorithms to predict customer purchases - a job that has given her more money than she knows what to do with as well as way less experience in the dating department than the average 30-year-old. It doesn't help that she has Asperger's and that French kissing reminds her of a shark getting its teeth cleaned by pilot fish. She decides that she needs lots of practice - with a professional - which is why she hires escort Michael Phan.