I don’t use words like “holy shit” very often but holy shit, is “Revelation” one exciting episode! Picking up where “The Wild Hunt” left off, Monroe’s (Silas Weir Mitchell) parents, Bart (guest star Chris Mulkey) and Alice (guest star Dee Wallace), gruffly meet Nick (David Giuntoli), who just happens to be a Grimm, a Wesen’s archenemy. Meanwhile, scalp cutting Woden (Matt Lasky), a “Wildesheer,” continues to wreak havoc on Portland.