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Publication Order of P.S. I Love You Books
| PS, I Love You | (2003) | Hardcover  Paperback  Kindle |
| Postscript | (2019) | Hardcover  Paperback  Kindle |
Publication Order of Flawed Books
Publication Order of Standalone Novels
| Where Rainbows End / Rosie Dunne / Love, Rosie | (2004) | Hardcover  Paperback  Kindle |
| If You Could See Me Now | (2005) | Hardcover  Paperback  Kindle |
| A Place Called Here / There’s No Place Like Here | (2006) | Hardcover  Paperback  Kindle |
| Thanks for the Memories | (2008) | Hardcover  Paperback  Kindle |
| The Gift | (2008) | Hardcover  Paperback  Kindle |
| The Book of Tomorrow | (2009) | Hardcover  Paperback  Kindle |
| The Time of My Life | (2011) | Hardcover  Paperback  Kindle |
| One Hundred Names | (2012) | Hardcover  Paperback  Kindle |
| How to Fall in Love | (2014) | Hardcover  Paperback  Kindle |
| The Year I Met You | (2014) | Hardcover  Paperback  Kindle |
| The Marble Collector | (2015) | Hardcover  Paperback  Kindle |
| Lyrebird | (2016) | Hardcover  Paperback  Kindle |
| Freckles | (2021) | Hardcover  Paperback  Kindle |
Publication Order of Short Stories/Novellas
Publication Order of Short Story Collections
| Every Year | (2010) | Hardcover  Paperback  Kindle |
| Girl in the Mirror | (2011) | Hardcover  Paperback  Kindle |
| Roar | (2019) | Hardcover  Paperback  Kindle |
Publication Order of Doctor Who: Time Trips Books
| The Death Pit | (2013) | Hardcover  Paperback  Kindle |
| Into the Nowhere | (2014) | Hardcover  Paperback  Kindle |
| Keeping Up with the Joneses | (2014) | Hardcover  Paperback  Kindle |
| Salt of the Earth | (2014) | Hardcover  Paperback  Kindle |
| A Handful of Stardust | (2014) | Hardcover  Paperback  Kindle |
| The Bog Warrior | (2014) | Hardcover  Paperback  Kindle |
| The Loneliness of the Long-Distance Time Traveller | (2014) | Hardcover  Paperback  Kindle |
| The Anti-Hero | (2014) | Hardcover  Paperback  Kindle |
Publication Order of Anthologies
| Irish Girls Are Back in Town | (2005) | Hardcover  Paperback  Kindle |
| Doctor Who: Time Trips | (2014) | Hardcover  Paperback  Kindle |