IN an age of garish excess when cinema audiences demand more entertainment for their money, two Will Smiths in Ang Lee’s action thriller must surely be better than one?

Alas, one iteration is a 23-year-old clone of the Fresh Prince, brought awkwardly to life using state-of-the-art digital trickery, motion capture performance and the leading man’s voice.

The result is a curiously inexpressive doppelganger, who is ordered to put a bullet through the head of his older self in bone-crunching fight sequences but must also bear the bulk of the film’s emotional weight.

It’s hard to forge a strong connection to an age-reversed facsimile when tears in his eyes are clearly the product of computer coding and the texture and pliability of skin looks synthetic.

We feel every second of the 117-minute running time, which sags noticeably in the middle act before a thunderous final showdown.

Our hopes for a revival of Smith’s career lie motionless in the debris.

He plays former marine turned sniper Henry Brogan, who is contracted by the Defense Intelligence Agency (DIA) to carry out hits on foreign targets that pose a threat to the American people.

Henry successfully neutralises rogue scientist Yuri Kovaks (Ilia Volok) on Belgian soil with a single bullet fired at a train travelling 238 km per hour.

When the dust settles, old buddy Jack Willis (Douglas Hodge) invites Henry to his yacht to deliver a bombshell – the intelligence on Kovaks was bogus and he didn’t deserve to die. Before Henry can confirm suspicions of DIA interference, he is targeted by a covert military unit called Gemini.

The assassin is Henry’s younger self, who can anticipate his every move.

Unsure who to trust, Henry calls on FBI surveillance operative Danny Zakarweski (Mary Elizabeth Winstead) and good friend Baron (Benedict Wong) to help him outwit his mirror image.

Gemini Man stretches a flimsy, linear plot over two hours, plodding between explosive set-pieces and Smith sheds his trademark wisecracks and most of the charm in a thankless lead role.

“It’s like watching the Hindenburg crash into the Titanic,” Varris snarls following one botched attempt to assassinate Henry.

Lee’s film isn’t quite that calamitous but it is a fire-scorched mess.

RATING: 4.5/10