The bizarre career of Jacob Frank.

Heresy, kabbalah, magic, science, Freemasonry, and two angry rabbis.

A mystical creed that hasn’t entirely faded away.

David Nieto.

A rich 1,800-year history.

Jacob Frank and his daughter Eva claimed the mantle of Shabbetai Tzvi.

Shabbetai Tsvi and the last global Jewish movement until modern Zionism.

Explaining the mystery of Shabbetai Tsvi.

From the Hasmoneans, to a famed poet, to the rabbi and imam who coauthored a book.

In the words of Gershom Scholem, “Nonsense based on me!”

Why did one great rabbi help a cantankerous social misfit and rabbinic genius tar a third rabbi as a heretic?

Conspiracy theories about the Dönme.

Zalman Shazar and Shabbetai Tsvi.

What happened after Shabbetai Tsvi chose conversion over death.