Something's missing in Unknown

Liam Neeson is the only sure thing in this thriller.

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Liam Neeson is a towering presence in Jaume Collet-Serra’s thriller, stalking and scowling around to impressive, if occasionally ridiculous, effect. Neeson plays a biotech expert headed to a conference in Berlin when a car accident leaves him in a coma. When he awakes, his wife (January Jones) doesn’t recognize him and a posse of murdering thugs are trailing him around. Unsure of whether it’s an elaborate conspiracy or his own traumatized mind causing the identity confusion, he enlists the help of the cabbie who crashed him (Diane Kruger) to help put together the pieces. There are a couple of crackling car chases and Neeson, when he’s not saddled with too much exposition, is oddly credible as an ass-whupper. Yet Unknown adds up to less than it should, and the requisite plot twist doesn’t pack the requisite punch.