How and why did a messianic movement develop around the Lubavitcher Rebbe? Could he have been Mashiach? What are the hidden beliefs of Lubavitchers about the Rebbe, and some of the lesser-known secret practices of the community? Plus: the true mystical and messianic meaning behind the Rebbe’s tefillin campaign, and an exploration of tefillin conspiracy theories and “Chabad tunnels”.