The fascinating story of John Harrison who, in the 18th century, believed he could make a clock that would work on board a ship—and so solve the problem of finding longitude at sea.
Michael Gambon
Jeremy Irons
Gemma Jones
Anna Chancellor
Emma Kay
Score: 7.2
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Score: 7.8
Score: 8.4
Score: 7.5
Score: 6.6
Score: 7.1
