

Two men, 200 years apart, obsessed with the same impossible clock.
Parallel stories: 18th century Harrison builds the marine chronometer for safe navigation at sea; 20th century Gould is obsessed with restoring it.
Acting
Gambon's gruff vulnerability; Irons' shattered elegance.
Production
Exquisite period detail, two eras seamlessly woven.

Director
Charles Sturridge
Trivia, insights & behind the scenes
Michael Gambon learned actual clockmaking for the role and could assemble parts blindfolded by filming's end.
The real H4 chronometer still ticks at Greenwich's Royal Observatory—Gould's restoration remains essentially intact today.