Off the Plank: Murder on Smuttynose Island (Revisited)

There’s a 27-acre island off the coast of Portsmouth, New Hampshire called Smuttynose Island. The population in 1873 was six: a family of Norwegian immigrants who rented the only house on the island. So it shocked the country when two of them were brutally murdered. The murder still inspires wild theories — and a bestselling book and movie — a century and a half later.