David Mackenzie has wrestled with ideas of masculinity, primal emotions and “self-imprisonment” for years. Starring Skins’ Jack O’Connell as a young offender moved into an adult prison, Starred Up is deliberately light on background. Nonetheless, it paints a heart-thumping portrait of machismo and the sociology of the dehumanising prison environment.

Based on writer Jonathan Asser’s experiences as a group therapy leader in a men’s lock-up, the film explores ideas of shame, violence and repression. In a claustrophobic environment where intimidation is currency, the most fearless win – and O’Connell’s Eric is vying for the crown. Swaggering, animalistic and without limits, his rage mixed with his prison smarts makes him a terrifying force. Fighting with guards, he greases up and arms himself with self-made weapons. When out of options, he will launch like a pitbull at his enemies, biting on their testicles, laughing maniacally through gritted teeth.

O’Connell’s electric and unpredictable performance is heightened by the script and direction, which drip authenticity.

Ben Mendelsohn plays Eric’s convict father, attempting to protect his son. Interesting, too, is Eric’s foil Oliver (Rupert Friend), the privileged therapy leader whose motivations are complex. Mackenzie’s gritty, graphic and gut-punching drama is gripping in every sense.

For more reviews, news and interviews read Roe's SCREEN LOVER blog & MOVIES MONDAY on HOTPRESS.COM