DJ Steve Dahl sparks an anti-disco riot; the Cherry Sisters emerge as the worst vaudeville act of all time; a rivalry between two actors turns violent.

Lin-Manuel Miranda (``Hamilton'') tells the story of Alexander Hamilton, his nemesis Aaron Burr and their infamous duel to the death.

Mayor La Guardia fights the mob over artichokes; Julia Child meets the love of her life while working as a spy; a molasses flood devastates Boston.

Emily Roebling oversees construction of the Brooklyn Bridge; con-man Victor Lustig sells the Eiffel Tower; Shakespeare steals the Globe Theatre.

Katharine Wright helps her brothers build an airplane; the Kopp sisters fight to protect their home; the Fox sisters stoke the spiritualism craze.

Charles Ponzi hires a publicist to improve his image; Sadie the Goat becomes a notorious Hudson River pirate; a con man poses as a Scottish royal.

Teddy Roosevelt revolutionizes football; Winston Churchill pays FDR a visit at Christmastime; Eleanor Roosevelt becomes friends with a female Soviet sniper.

Carry A. Nation vandalizes bars; Andrew Jackson gets involved in a shootout; Marsha P. Johnson stands up for LGBT rights.

Sam Patch becomes America's first daredevil; Marilyn Monroe and Ella Fitzgerald form a lasting friendship; Buster Keaton takes his talents to the big screen.

In the Season 4 premiere, LSD guru Timothy Leary breaks out of prison; a sailor attempts a bold rescue from Devil's Island; and a baker remains calm on the Titanic thanks to his whiskey habit.