Terminator Genisys - C4

Emilia Clarke and Arnold Schwarzenegger prepare for their destiny

Arnold Schwarzenegger is back in this enjoyable, if flawed, reboot of the first Terminator film. 3/5 stars

Of course, it can't possibly touch James Cameron's original cult classic's greatness, but it's still very inventive.

The rather baffling plot has resistance leader John Connor (Jason Clarke) sending pal Kyle Reese (Jai Courtney) from the future to 1984 LA to prevent a cyborg assassin from killing his mum, Sarah Connor (Emilia Clarke).

However, she is no longer a distressed damsel in need of rescue, but a ballsy kick-ass heroine who already knows about the threat from artificial intelligence Skynet and has spent her young life readying herself to meet it with the help of Schwarzenegger's benign Terminator, who goes by the cuddly nickname 'Pops' and is Sarah's protector.

Meanwhile, the big threat facing humanity is an all-embracing operating system, destined to be launched in 2017 (and personified by former Doctor Who Matt Smith).

Given all the head-spinning goings-on, we really do need the light relief provided by Schwarzenegger's string of self-mocking quips ('I lack the mimetic skills to appear as anyone else,' and 'I'm old not obsolete' are typical lines). Emilia Clarke also fares well, though Jason Clarke and Courtney's characters are particularly glum.

Still, keep your wits about you and it's not bad at all once Sarah and Arnie  leap into action to save the day.

A film critic for over 25 years, Jason admits the job can occasionally be glamorous – sitting on a film festival jury in Portugal; hanging out with Baz Luhrmann at the Chateau Marmont; chatting with Sigourney Weaver about The Archers – but he mostly spends his time in darkened rooms watching films. He’s also written theatre and opera reviews, two guide books on Rome, and competed in a race for Yachting World, whose great wheeze it was to send a seasick film critic to write about his time on the ocean waves. But Jason is happiest on dry land with a classic screwball comedy or Hitchcock thriller.