Writing sci-fi, horror, crime and dark comedy material for TV and film has been my focus since graduating from the Australian Film Television and Radio School. I’ve been fortunate enough to win a few screenwriting competitions and gain representation along the way.

Passionate about examining monsters of all varieties through unexpected, timely and inclusive stories, I work solo and in full-time screenwriting partnership MMGG with Jasper Garner Gore and Rebecca Moret across original and adaptation projects now in different stages of development in Australia, the Netherlands and UK.

Before committing to a tortured life of screenwriting, I worked extensively as a journalist and touring musician internationally. As such, I’m well accustomed to long hours, little sleep, large egos and surviving on literal peanuts.

I get stuff done.


In 2018 my horror/mystery TV pilot Small Town (written with Ella Roby) was selected for development funding through Scripted Ink, Shane Brennan’s screenwriting initiative based in Australia.

Also in 2018, I was selected alongside Chris Burke, Peter Mattessi, Jessica Paine and Ella Roby to travel to Los Angeles to attend the Charlie’s Lab Pilot Program a joint initiative between Australians in Film, Scripted Ink and AWG Pathways.

Led by industry professionals, the course included intimate talks and conversations with some of LA’s most interesting insiders, creatives and executives who are part of the working machine that is Hollywood.

My short horror/adventure film screenplay Fingers was inducted into the Australian Writer’s Guild’s Pathways Showcase Program in 2016. I was made part of their My Slate initiative in 2019, designed for screenwriters who have had more than one project accepted into the program.

As part of a grant from Screen NSW, in June 2022 I returned with my writing team to Australians In Film’s headquarters at Charlie’s on the Raleigh Studios lot in Los Angeles, where we spent two weeks developing a new one-hour TV pilot and pitching our existing projects to the local industry.



Short Screenplay 

Horror/Dark Comedy

Logline: After a mishap hanging pictures in her new apartment, a young woman is forced to meet her neighbor, inadvertently entering a life-or-death situation.

WINNER – “Best Unproduced Short Script” – A Night Of Horror Film Festival 


One Hour TV Drama Pilot (with Ella Roby)


Now in development with Scripted Ink.

Logline: A troubled police officer’s investigation into a possible murder brings a sinister underground society to the streets of a mountain-side town, threatening to unleash a powerful new drug that offers users the chance to reexperience life as children.

WINNER – Shore Scripts TV Pilot Competition

WINNER – WeScreenplay Television Competition 


TV – Anthology Half-Hour Episode


Logline: Spurred on by a tall story from his deadbeat Uncle, eight-year-old Tom takes it upon himself to confront a local legend and make a terrifying sacrifice for his family.

INDUCTEE – Australian Writers’ Guild Pathways Program

TOP 3 FINALIST – Monte Miler Award Short Form AWGIE Awards

WINNER The Outside The Box Award” – Genre Blast Film Festival 

RUNNER UP – “Best Unproduced Short Screenplay” – A Night Of Horror Film Festival

To chat writing, your projects or mine, get at me here:

Or Twitter @LachlanMarks

For bookings, please contact:

Kathryn Fleming
The Fleming Agency
+61 2 8353 0595