
Acting
Cassandra O'Sullivan
Born
1991-04-22 (35)
Place of birth
South Africa
Known for
Acting
Credits
5 titles
Cassandra O'Sullivan is a dynamic South African-born actor, model, and singer based between Ireland and the UK. Bringing a rich, international background to her craft, Cassandra spent her formative years in South Africa before relocating to Ireland. Her early career in the arts began in the music industry, where she showcased her vocal talent and stage presence as the lead singer of a band an experience that seamlessly transitioned into her passion for screen acting. On television, Cassandra is known for her compelling co-starring role as a nurse in the second season of the acclaimed drama series Crà, as well as her appearance in the fantasy-adventure series Wayfinders Season 1. Her feature…
Known for
8.4A century before the events of Game of Thrones, two unlikely heroes wandered Westeros: a young, naive but courageous knight, Ser Duncan the Tall, and his diminutive squire, Egg. Set in an age when the Targaryen line still holds the Iron Throne and the last dragon has not yet passed from living memory, great destinies, powerful foes, and dangerous exploits await these improbable and incomparable friends.
A Knight of the Seven Kingdoms
2026
6.6A police detective returns to her hometown and becomes involved in a missing person case, which is linked to her traumatic past and the town's dark history.
Blackshore
2024
6.8Follows three high schoolers mistakenly transported to a brutal medieval world. Falling in with unlikely comrades caught in a civil war, the teens fight for survival as they search for a way back home.
The Wayfinders
2025
6.5Earl Clancy, a cinema owner on the edge, battles a series of disasters while juggling personal turmoil and the chaos of a packed Friday night crowd. Told in real time over the course of the movie playing in the cinema (Breathless, starring Richard Gere).
Once Upon a Time in a Cinema
2026
NRThree seemingly unconnected lives become intertwined through a series of unexpected events, forcing each person to confront the consequences of their choices. As the truth begins to surface, everything changes in ways they never saw coming.
I Stared The Devil In The Eye
2026
Film credits
2020s · 2 titles
6.5Earl Clancy, a cinema owner on the edge, battles a series of disasters while juggling personal turmoil and the chaos of a packed Friday night crowd. Told in real time over the course of the movie playing in the cinema (Breathless, starring Richard Gere).
Once Upon a Time in a Cinema
2026
NRThree seemingly unconnected lives become intertwined through a series of unexpected events, forcing each person to confront the consequences of their choices. As the truth begins to surface, everything changes in ways they never saw coming.
I Stared The Devil In The Eye
2026
Series credits
8.4A century before the events of Game of Thrones, two unlikely heroes wandered Westeros: a young, naive but courageous knight, Ser Duncan the Tall, and his diminutive squire, Egg. Set in an age when the Targaryen line still holds the Iron Throne and the last dragon has not yet passed from living memory, great destinies, powerful foes, and dangerous exploits await these improbable and incomparable friends.
A Knight of the Seven Kingdoms
2026
6.6A police detective returns to her hometown and becomes involved in a missing person case, which is linked to her traumatic past and the town's dark history.
Blackshore
2024
6.8Follows three high schoolers mistakenly transported to a brutal medieval world. Falling in with unlikely comrades caught in a civil war, the teens fight for survival as they search for a way back home.
The Wayfinders
2025
