Martin Scorsese’s mammoth, authorised survey of the life of George Harrison is a strange old thing. Deeply moving, poetic, full of love, wit and warmth, it's also at times oddly assembled and, at a shade over three and a half hours, runs wide but not always terribly deep. 

The opening scene of Martin Scorsese's new film - a storm-tossed ferry buffeting its way to an isolated island off America's East Coast - bears an unmissable resemblance to that of Roman Polanski's The Ghost. So too does its premise, of a vulnerable young man who falls under the sway of a powerful, indefinably sinister older one.