Greg's first crime novel ‘The Night Whistler’ was published by Text Publishing in 2020, and the sequel, The Carnival is Over was published in 2022. The Night Whistler was shortlisted for the 2021 Ned Kelly Awards Best Debut Crime Novel. The Carnival Is Over was shortlisted for the 2023 Ned Kelly Awards for Best Crime Fiction.
Greg is the director of leading Australian script service www.scriptcentral.com.au His award-winning short films and documentaries have screened at national and international film festivals and TV channels. His screenplays The Whistler and Pangs won several national script competitions and three Varuna Fellowships. Greg has lectured in Scriptwriting at Macquarie University, UTS, and AFTRS. Script editing credits include feature films ‘Moon Rock for Monday’, 'Shayda', ‘Don’t Tell’, ‘Needle’, ‘Cold Turkey’, ‘The Bet’, The Tropfest 2013 Best Film Winner 'We've All Been There', 2016 AWG John Hinde Science Fiction script award winner and many others.

