Off-Limits Books in Order
Part ofCatharina Maura Books in OrderSee the Off-Limits series by Catharina Maura in reading order, with book summaries and where-to-start tips for each forbidden, off-limits romance.
Last updated: December 24, 2025
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Publication Order
4 books
Professor Astor
by Catharina Maura
2022
After an unforgettable one-night stand, Leia is stunned to discover that Adrian Astor is both her new PhD supervisor and the billionaire cousin who just hired her as a nanny. Caught between ethics, desire and family loyalties, their off-limits attraction refuses to fade.
Bittersweet Memories
by Catharina Maura
2022
Heartbroken Alanna goes after her ex-boyfriend’s older brother Silas in a rash bid for revenge, only to discover he is also her exacting new boss. As strange flashes of memory and obsession surface, she realizes Silas knows a past she can barely remember.
Until You
by Catharina Maura
2021
After losing her job, home and boyfriend in one brutal day, Aria moves in with her brother’s best friend, tech mogul Grayson Callahan, and takes the job he offers. When he discovers she runs the vigilante platform he secretly admires, their off-limits bond ignites.
Dr. Grant
by Catharina Maura
2021
Dr. Noah Grant’s dream job at an elite college clinic comes with three rules, including staying away from the dean’s granddaughter. When inventive PhD student Amara Astor appears as both his patient and subordinate, keeping his distance stops being an option.
Series background & context
The Off-Limits series is built around one big question, what happens when the person you fall for is the one you absolutely should not touch? Each book follows a different couple tied together by overlapping friendships, workplaces and shared history, and every relationship comes with a clear do-not-cross line.
The series opens with Until You, where Aria loses her job, her home and her boyfriend in one brutal day. Her brother’s best friend, tech genius Grayson Callahan, offers her both a place to live and a new job. On paper it is a sensible arrangement. In reality he is also the anonymous online ally she has been confiding in through a vigilante platform she built to help victims, and the attraction between them has been simmering for a long time.
In Dr. Grant, Noah finally achieves his dream of becoming a doctor at an elite college clinic, only to be handed three simple rules: no students, no patients and absolutely no involvement with the dean’s granddaughter. Then Amara Astor, a brilliant PhD student and inventor, turns up in his exam room with a very intimate problem that breaks all three rules at once. His career, her independence and their growing feelings collide in a very small office.
Professor Astor turns the lens on Adrian Astor, the brilliant, elusive professor who has an unforgettable one-night encounter with Leia, then reappears two years later as her PhD supervisor. To complicate matters further, he is also the billionaire who hires her as a nanny. Leia is his student, his employee and his cousin’s best friend, and yet circumstances keep pushing them into closer proximity.
By the time you reach Bittersweet Memories, the lines between past and present are even more tangled. Alanna sets out to get even with the boyfriend who broke her heart by going after his older brother Silas, not realizing he is also her new boss. As they work together, it becomes clear that Silas knows far more about her forgotten past than he should, and that the pain she is trying to outrun is tied directly to him.
Taken together, the series reads like a mosaic of forbidden love stories. The tone is contemporary and glamorous, but the emotional stakes feel grounded, with characters dealing with grief, trauma, class differences and the pressure of high expectations.
You can read any Off-Limits book as a standalone, yet reading in order lets you see cameos, friendships and family dynamics unfold over time. Expect plenty of angst, sharp banter and the satisfying payoff that comes when two people decide a love like theirs is worth breaking the rules for.
Edited by
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