The Chalice - S2-E3
Factual error: After the opening credits, Caine is walking along the beach. On the beach behind him, you can see a modern long-board surfboard lying in the sand which gets caught up in a wave.
Factual error: Serenity Johnson's well-worn tarot cards are from the world's most popular tarot deck created by A.E. Waite and drawn by P.C. Smith, which was first published in 1910 in England. Kung Fu takes place in the old West of the 1870s, about 40 years before the deck was published.