Sleepy Hollow - This is War

The main thing to note about War is that he may have the body of Denethor of
Gondor, but he is well metal.

At the end of Season 1, Henry Parrish was revealed as Ichabod and Katrina's rogue warlock son Jeremy (and also War, the second horseman,) sealed Ichabod in his grave, gave his mother to her spurned suitor (now Death) and left Abbie trapped in Purgatory. Season 2 opens with an apparent non-sequitur in which Jeremy learns the location of a key which can unlock Purgatory, but inadvertently tips Ichabod off to a means of rescuing Abbie.

The series takes major points for linking a plot-important occult key to Benjamin Franklin's kite experiments. Ichabod turns out to have been Franklin's rather reluctant apprentice for a time and has a few choice words for that Founding Father, providing a welcome change of pace to his reverence of Washington and Jefferson.

'This is War' kicks the tension up a notch, while maintaining the series' humour (Ichabod records a touching last message on Abbie's phone, only to discover that the recording has failed due to lack of memory.) As he proved in both The Lord of the Rings and in 50-75% of Fringe, John Noble makes a truly sinister villain with a flare for soft-spoken craziness. If the forces of Moloch are to have a face, then his is as good a face as any.