Screenwriter, Novelist


"A thrilling tale of time travel and alternate timelines with a refreshingly optimistic view of humanity's future."
—Andy Weir, bestselling author of The Martian 


All Our Wrong Todays was published on February 7, 2017

“All Our Wrong Todays” is a story of family and friendship, heartbreak and love, technology and society, science and entertainment, ambition and responsibility, time travel and alternate realities, and the versions of ourselves that we shed and grow into through the unexpected, often messy paths of our lives.

The paperback will be released in North America on February 20, 2018.

AOWT paperback.jpg

I also write movies, like the comedy “What If” (also known as “The F Word”), starring Daniel Radcliffe, Zoe Kazan, Adam Driver, Mackenzie Davis, Megan Park, and Rafe Spall, and directed by Michael Dowse.

Please get in touch if you have any questions or comments about my work. You can contact me directly through this site, sign up for my newsletter, or find me on Facebook and Twitter.

Elan Mastai has conjured up a witty and freewheeling time-traveling romance that packs an emotional wallop. ALL OUR WRONG TODAYS is a page-turning delight.
— Maria Semple, bestselling author of "Where'd You Go Bernadette?" and "Today Will Be Different"
A clever concept that Mastai executes to perfection. An absolute joy to read.
— V.E. Schwab, bestselling author of "A Darker Shade of Magic"
Time travel bends our minds, and in the right hands it can tickle our funny bones. All Our Wrong Todays is a twisty, provocative, creative tale of one person at the center of multiple branching timelines. It’s an extremely enjoyable way to get yourself thinking about our world and the ways it could be very different.
— Sean Carroll, author of "The Big Picture: On the Origins of Life, Meaning, and the Universe Itself"
As a novelist, I hate Elan Mastai for writing a perfect book. As a reader, I couldn’t be more grateful.
— Ron Currie, author of "Everything Matters!" and "The One-Eyed Man"
All Our Wrong Todays
By Elan Mastai