Hypothesis

He is everything she doesn't want, so why does she want him so badly? From the bestselling author Penny Reid One week. Private beach. Invisible girl. Jerk-faced bully. What's the worst that could happen? Kaitlyn Parker has no problem being the invisible girl, which is why she finds herself hiding in various cabinets and closets all over her college campus. Despite her best efforts, she can't escape the notice of Martin Sandeke-bad boy, jerkface bully, and the universe's hottest, wealthiest, and most unobtainable bachelor-who also happens to be Kaitlyn's chemistry lab partner. Kaitlyn might be the only girl who isn't interested in exploiting his stunning rower's build, chiseled features, and family's billionaire fortune. Kaitlyn wants Martin for his brain, specifically to tabulate findings of trace elements in surface water. When Kaitlyn saves Martin from a nefarious plot, Martin uses the opportunity to push Kaitlyn out of her comfort zone: spring break, one week, house parties, bathing suits, and suntan lotion. Can she overcome her aversion to being noticed? Will he be able grow beyond his self-centered nature? Or, despite their obvious chemistry, will Martin be the one to drive Kaitlyn into the science cabinet of obscurity for good?

It's too late to turn back now . . . From the bestselling author Penny Reid Four days left. Private beach (...and boat). Not so invisible girl. And maybe less of a jerk-faced bully than originally thought. What's the worst (or the best) that could happen? Kaitlyn is finding life outside of the science cabinet of obscurity to be quite illuminating ...and so are her pants. When things heat up between Kaitlyn Parker and Martin-previously known as the jerk-faced bully-Sandeke, she places her trust in the one person she never thought capable of earning it, let alone keeping it safe. Fortunately or unfortunately for Kaitlyn, where she gives her trust she can't help but also give her heart. But how will the world beyond the sanctuary of their newfound connection react to their relationship? Soon senators, chinless billionaires, and elements beyond Martin and Kaitlyn's control want to weigh in on the young couple's future. Navigating the chaotic inferno of new love might be more than Kaitlyn bargained for, and much, much more than her trust-or her heart-can handle.

He broke her heart, and now he's back . . . From the bestselling author Penny Reid Part 3 of Elements of Chemistry One week. Manhattan apartment. Super-hot ex-boyfriend. ...What's the worst that could happen? It's been nine months since Kaitlyn Parker has seen or heard from Martin Sandeke-nine months and five stages of matter. She's lived through the worst of first-love heartbreak, and is most certainly stronger (and less likely to hide in science cabinets) than ever before. But now Martin is back. And he wants to be friends. But he's sending mixed signals to the Bunsen burner in Kaitlyn's pants. Will Martin re-capture Kaitlyn's heart? Can Kaitlyn and Martin ever be just friends? Or, despite an abundance of chemistry, are some bonds just too unstable to endure?

One week. Home alone. Girl genius. Unrepentant slacker. Big lie. What's the worst that could happen? Mona is a smart girl and figured everything out a long time ago. She had to. She didn't have a choice. When your parents are uber-celebrities and you graduate from high school at 15, finish college at 18, and start your PhD program at 19, you don't have time for distractions outside of your foci. Even fun is scheduled. Which is why Abram, her brother's best friend, is such an irritant. Abram is a talented guy, a supremely gifted musician, and has absolutely nothing figured out, nor does he seem to care. He does what he feels, when he feels, and - in Mona's opinion - he makes her feel entirely too much.

All she wants is forgiveness, and all he wants is revenge . . . From the bestselling author Penny Reid One week. Private cabin. Famous physicist. Still an unrepentant slacker (but now also very, very angry). What's the worst that could happen? Mona's meticulously planned allotment of relaxation is thrown into chaos by the unscheduled appearance of her older brother's band of friends, including the one person she'd hoped to never face again. Abram still makes her feel entirely too much, which is one of the reasons she disappeared after their one week together. But now, trapped on a mountain of snow and things unspoken, Mona will have to find a way to coexist with Abram, chaos and all.

From the New York Times Bestselling Author Penny Reid A (brokenhearted) physicist. Now an infamous (who is LITERALLY EVERYWHERE!! UGH!) musician. The worst has already happened. Mona has learned that she has nothing figured out and plans are meaningless. After leaving her in Aspen, Abram is now breaking sales-records, rising to rock star fame almost overnight. Mona can't seem to escape him. He is literally everywhere, or at least images of him are. Just when she thinks things can't get any more confusing, Abram returns... What happens next? Only TIME will tell.

Sam just received a wedding invitation. . . to her own wedding. Samantha Jarlston doesn't talk about her past and she has no interest in a long-term romantic relationship with anyone. As a 28-year-old genetics Ph.D. student living in New York City with three roommates and two part-time jobs, Sam doesn't have much time to do anything other than run sequencing experiments, grade lab reports, and avoid handsy assistant professors. She definitely doesn't have time or means to plot revenge against the evil charlatan who destroyed her family fifteen years ago, let alone think about her former childhood best friend and current chess grandmaster, Andreas Kristiansen. But then she receives an invitation to her own wedding and Andreas is the groom. This absurdity sets off a series of (unfortunate?) events complete with corporate fraud, academic threats, and a very particular kind of contract relationship, one which explicitly forbids any and all physical contact. Before Sam knows it, she's living with Andreas in his penthouse apartment. She's also sleepwalking again, something she hasn't done since she was a teenager. Big problem: she keeps waking up in the wrong bed. 'INHERITANCE' is book 1 in the 'Fundamentals of Biology' trilogy, ends on a cliffhanger, and cannot be read as a standalone. 'Fundamentals of Biology' is the third trilogy in a series of trilogies that begins with 'Elements of Chemistry' and 'Laws of Physics.' You do NOT need to read 'Elements of Chemistry' or 'Laws of Physics' before reading 'Fundamentals of Biology.'