The official press release has the following information about the episode:
SAM AND DEAN FACE OFF AGAINST A GOLEM — Sam (Jared Padalecki) and Dean (Jensen Ackles) investigate the death of Rabbi Bass (guest star Hal Linden, “Barney Miller”), who spontaneously combusted. The case becomes ever more confusing when they learn that the Rabbi was researching Nazi Necromancers. Sam and Dean are attacked by a Golem (guest star John DeSantis) who turns out to belong to the Rabbi’s grandson, Aaron (Adam Rose). The key to the case lies with the Golem but Aaron doesn’t know how to control him, which leaves everyone in danger. Phil Sgriccia directed the episode written by Bed Edlund (#814).
In Jewish folklore, a golem is a creature created from clay and animated by magic, usually to serve the summoner. The most famous story of the golem is inspired by Judah Loew ben Bezalel, who was the chief rabbi of Prague in the late-16th-century and supposedly created a golem to protect the Jews of the Prague ghetto from antisemitic attacks.
There are some interesting parallels between this legend and the episode summary, so we’re excited to see where this story goes!