The Rosie Effect

The Rosie Effect

The hilarious and uplifting romantic comedy from the million-copy bestselling series


Join Don and Rosie in their next chapter together with the joyously weird and wonderful romantic comedy you'll never forget . . .


'A wholly absorbing, vivid read that leaves you pining to be reunited with its characters every time you put it down - if you're able to' INDEPENDENT
'Offers plenty more laugh-out-loud moments' GUARDIAN
'Touching and entertaining' MAIL ON SUNDAY

Can a man who loves order embrace chaos?

Forty-one-year-old geneticist Don Tillman is living in New York City with his new wife Rosie.

Sure, they're incompatible on paper - yet when did love ever follow the rules?

And after ten months and ten days of marriage, Don has accepted a little chaos into his carefully ordered life.

But when Rosie announces she's pregnant, Don panics.

Suddenly, everything he loves most is in danger of being lost . . .

What did Rosie and Don do next? Find out in The Rosie Result - the hilarious and heart-warming conclusion to the series!

'The hilarious follow-up to The Rosie Project, one of the best novels I've read in ages. A sweet, entertaining, and thought-provoking book' Bill Gates

'Intelligent fun' THE TIMES

'Quirky and sweetly funny, you will want to join the Don Tillman fan club all over again'

'Genuinely heartwarming, truly endearing, plenty of LOLs. You may end up a blubbing wreck' HEAT

'There is much to love in this comedy of errors'

Join the thousands of readers who have fallen in love with Don and Rosie . . .

'Touching and funny. There was not a page I turned where I was not rooting for the characters or smiling' 5* Reader Review
'Warm, wonderful and laugh out loud funny. Stays with you long after you have finished' 5* Reader Review
'Wonderful, touching, funny, very romantic. Glorious' 5* Reader Review
'Funny, poignant and original. The best romantic comedy I've read since Bridget Jones' 5* Reader Review
'Utterly, utterly brilliant! Captured my heart' 5* Reader Review
'A truly wonderful, warm-hearted story. Read it, you won't regret it!' 5* Reader Review
'If I could have given this book 6 stars, I would. Brilliant' 5* Reader Review


  • All three of the Rosie novels made me laugh out loud. Ultimately the story is about getting inside the mind and heart of someone a lot of people see as odd, and discovering that he isn't really that different from anybody else
    Bill Gates, 2020 Summer Books

About the author

Graeme Simsion

Graeme Simsion's first novel, The Rosie Project, and the sequel The Rosie Effect were both bestselling novels worldwide. The Rosie Result is the third and final Rosie installment. Graeme is also the author of the critically-acclaimed standalone novel The Best of Adam Sharp.
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