Part 1: “Let the Experiment Be Made,” charts Franklin's first 47 years (he was born in 1706), a period that saw the birth of the Enlightenment. Franklin took it to heart, writing aphorisms based on it in his “Poor Richard's Almanack” and making life easier for his fellow Philadelphians by thinking up such things as public libraries and a volunteer fire department. Then there was electricity. Richard Easton plays Franklin (Dylan Baker plays a younger Franklin).

• Colm Feore
• Dylan Baker
• Jefferson Mays