In 'The Foursome,' conjoined twins marry two sisters — and that's just the beginning

In 1839, conjoined twins and famous showmen Chang and Eng Bunker — native to Thailand, then called Siam — took a break from touring, settled in North Carolina, bought a slave plantation, and married two American sisters. The interracial union caused a public scandal for more reasons than one, and their story is the inspiration for Christina Baker Kline’s novel The Foursome. In today’s episode,…